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 199 for “"coordinate system"”.
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Rapid coordinate system creation and mapping using Crickets
In this thesis, I describe a system that lays the foundation for context-aware applications. This system allows a user to set up a reference coordinate system in a room, using three Cricket listeners attached to a wooden frame. The system then assigns coordinates to Cricket beacons, which are …
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Considerations in monumenting the Virginia state plane coordinate system
… been several efforts in the area of State Plane Coordinate System uses which have generated a large amount of interest in the Commonwealth of Virginia. Many individuals are interested in the possible benefits which could be derived from the monumentation of the Virginia State Plane Coordinate …
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Using a Curvilinear Coordinate System for Satellite Relative Motion
… which, this will be done by using a curvilinear coordinate system. Furthermore, a technique of using a Virtual Chief satellite will by employed to allow for the HCW equations to be valid for cases where the Chief is in an eccentric orbit.
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PCoord : a decentralized network coordinate system for Internet distance prediction
… we present PCoord, a peer-to-peer network coordinate system for overlay topology discovery and distance prediction. The goal of PCoord is to allow participating peer nodes in an overlay network to collaboratively construct an accurate geometric model of the overlay network topology in a …
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A Finite-Difference Time-Domain Electromagnetic Solver in a Generalized Coordinate System
A new, finite-difference, time-domain method for the simulation of full-wave electromagnetic wave propogation in complex structures is developed. This method is simple and flexible; it allows for the simulation of transient wave propogation in a large class of practical structures. Boundary …
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Development of a Higher-Order Ice Sheet Model Using a Rescaled Coordinate System
The Intergovernmental Panel on Climate Change (IPCC) has estimated between 9 and 88 cm of sea level rise over the next hundred years. Of this, only negative 19 to 11 cm is attributed to the largest ice masses on the planet, the Antarctic and Greenland ice sheets. Over the last decade, dramatic …
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Development of a Higher-Order Ice Sheet Model Using a Rescaled Coordinate System
The Intergovernmental Panel on Climate Change (IPCC) has estimated between 9 and 88 cm of sea level rise over the next hundred years. Of this, only negative 19 to 11 cm is attributed to the largest ice masses on the planet, the Antarctic and Greenland ice sheets. Over the last decade, dramatic …
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Coordinate system dependence of muscle forces predicted using optimization methods in musculoskeletal joints
… (usually defined as the origin of the joint coordinate system) has been used as a constraint condition for optimization procedures and the joint reaction moments were assumed to be zero. This research project, through the use of a three-dimensional elbow model, investigated the effect of …
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Localization of Human Pelvis Anatomical Coordinate System Using Ultrasound Registration to Statistical Shape Model
… the orientation of the pelvic anatomical coordinate system (PaCS) is to use intra-operative X-ray fluoroscopy in a specialized interventional radiology facility to guide the procedure. Employing intra-operative ultrasound (US) imaging fused with pre-operative CT scan or fluoroscopy imaging …
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Analysis of the Out-of-Control Falling Leaf Motion using a Rotational Axis Coordinate System
… and how we understand them, an alternate coordinate system will be introduced that will lend insight and simplification into the understanding of these dynamic motions. The main contribution of this coordinate system is that one can easily visualize how the instantaneous velocity vector …
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Movement Function Follows Spatial Form: Coordinate System Implications for Online Visual Feedback Control of the Hand
… movements are planned and represented in a polar coordinate system and that the dimensions, direction and extent are independently specified and processed. We were interested to find out whether there was behavioral evidence for the independent control of hand direction and extent as a movement …
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The application of PCA as a movement pattern recognition technique: A proof of principle
… related to motion analysis reference coordinate system were assessed. All analyses were addressed as case-studies. For the first case study, referencing motion data to a global (lab-based) coordinate system compared to a local (segment-based) coordinate system affected the ability to …
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Self-organising an indoor location system using a paintable amorphous computer
… rapid deployment of a passive indoor positioning system's infrastructure.<br/>A future hypothetical scenario is used where computing particles are suspended in paint and covered over a ceiling. A spatial pattern is then formed over the covered ceiling. Any small portion of the spatial pattern may …
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Methodologies and Applications of Data Coordinate Conversion for Roadside LiDAR
… The first one is that the raw data is in LiDAR's coordinate system, which greatly affects the visibility of the data. Secondly, the detection range limits its further development. Although LiDAR can detect data within 200 m from itself, the effective detection range is 50~ 60 m. What's more, the …
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A Novel Method For Determining Acetabular Orientation
… the separate halves of the pelvis by utilizing a coordinate system based on bilateral landmarks. The purpose of this study was to determine the three-dimensional orientation of the entire acetabulum. For this research, an improved programmatic method was developed for determining acetabular …
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International Space Station Remote Sensing Pointing Analysis
… The analysis begins with the discussion of the coordinate systems involved and then conversion from the target coordinate system to the instrument coordinate system. Next the geometry of remote observations from the Space Station is investigated including the effects of the instrument location …
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Viscous fluid sheets
… we derive the governing equations in terms of a coordinate system that moves with the film. Special attention is given to incorporating inertia and the curvature forces that arise from the thickness variations along the film. Exploiting the slenderness of the film, we assume that the transverse …
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Person tracking in 3D using Kalman filtering in single and multiple camera environments
… use of Kalman filtering principles. The tracking system could be used in conjunction with behaviour analysis systems to perform automated monitoring of human activity in a range of different environments. Targets are tracked in a 3-D world-view coordinate system which is common to all cameras …
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Kinematic Chain Modelling of Rotary System as Applied to a Selectric Typewriter
… used to create a homogeneous transform matrix system that allowed the position of the printing character in a local coordinate system to be represented in the global coordinate system through a series of shape and joint matrix transforms. This allowed the position and rotation of the character …
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