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 39 for “"distance measurement"”.
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Distance measurement by inertial means
Thesis (M.S.) Massachusetts Institute of Technology. Dept. of Aeronautical Engineering, 1949.
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Bio-inspired vision-based evasion control: collision avoidance without distance measurement
… a framework for collision avoidance, where the measurement of the distance to objects and obstacles is not available. This limitation is common to all low-cost and small, ground, or flying vehicles that are not equipped with expensive cameras. The proposed solution takes inspiration from …
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An investigation into path analysis for line-of-sight microwave radio
… are reviewed. The Tellurometer Method of distance measurement is described and its suitability to path analysis discussed.
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Three dimentional control of a diode based laser cutter
… control the depth of cut. The idea of measuring distance using diode lasers (and other laser technologies) is a relatively mature technology and is common to various consumer and industrial products. Recently diode lasers have become powerful enough to perform as laser cutters allowing a merger …
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The Fourier convolution-deconvolution method: its limitation and application
<p>The ability to measure distances within a biomolecule is an important tool for determining structure and function. The electron paramagnetic resonance (EPR) Fourier Convolution-Deconvolution method of measuring distance was utilized to determine the distance between two cysteine mutated residues …
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Brief Study of Classification Algorithms in Machine Learning
… KNN algorithm is designed using Euclidean distance measurement and Decision Trees make use of ID3 algorithm as a basis. We conclude the study by providing an overall picture of its strengths and weaknesses in solving different types of problems. Also a major point to note is that this paper …
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Angled roller mecanum wheel design that exhibits speed reduction
… the encoder data from the motor and the linear distance the wheel travels. Based on that, the detected speed reduction ratio was 4.9:1, as opposed to the modeled ratio of 3.9:1. This discrepancy is likely cause by the absence of slippage in our model, the jiggle in the wheel's motion, the …
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A Sensitivity Analysis of the Coefficients for the Transformation of the Electrocardiographic Orthogonal Three-lead System (Frank) to the Standard Twelve-lead System
… change in the waveform is denoted by a distance measurement from the pattern class boundary corresponding to the best-experimental coefficient estimates (Dower coefficients) to the alternate coefficient specification measurement in pattern space.</p> <p>The findings demonstrate the …
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Facial expressions emotional recognition with NAO robot
… face by Viola- Jones technique. Later, facial distance measurements are accumulated by geometric based facial distance measurement method. Then facial action coding system is used to detect movements of measured facial points. Finally, measured facial movements are evaluated to get instant …
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Design and implementation of MEMS biomechanical sensors for real-life measurements of gait parameters
… based instruments are not suitable for measurement in the natural environment such as in the outdoors. This research analyses three promising distance measurement techniques (capacitive, electric field and ultrasound) that may be suitable for MEMS realization of foot clearance …
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Road sign recognition
… even when the image is noisy. An effective color distance measurement is developed to work with the segmentation. We then designed a hierarchical feature representation scheme, which organizes model features in a tree structure. The tree nodes are components that form the basic parts of a model, …
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Analyzing Crime on Street Networks: A Comparison of Network and Euclidean Voronoi Methods
… on the assumption of Euclidean (straight-line) distance. However, crime like most social activity is often mediated by the built environment, such as along a street or within a multi-story building. Thus, analyzing spatial patterns of crime with only straight-line Euclidean distance measurement …
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Protein Loop Length Estimation From Medium Resolution Cryoem Images
… "medium" resolutions{between 5 and 10 A.</p> <p>Distance measurement along 1D skeletons of 3D images is an important step in de novo modeling. Despite the need of such measurement, little has been investigated about its accuracy in searching for an effective method. We propose a method to refine …
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Structural studies of amyloid fibrils using solid-state NMR
… An improved method for highly accurate distance measurement across parallel [beta]-sheets in amyloid fibrils has been developed. This method combines the a double quantum filtered version of the dipolar recoupling sequence DRAWS with the simulation and data fitting program SPINEVOLUTION …
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3D Camera Based on Gain-Modulated CMOS Avalanche Photodiodes
… and demodulation contrast to allow a higher distance precision. In this thesis we propose a new concept of range camera exploiting linear-mode avalanche photodiodes as in-pixel demodulating detectors. Due to photocurrent gain modulation, avalanche photodiodes can combine optical sensing and …
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Graph Based Optimization For Scientific Computing
… genome reconstruction. We present a new distance measurement model for unequal genomes and develop a branch-and-bound algorithm based on multiple breakpoint graph to calculate the median for unequal genomes. We also present a mixture method to infer the ancestral gene order based on …
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A low cost tellurometer
… development of a low-cost microwave electronic distance measurement instrument using the Tellurometer phase-measurement principle. In a simplified form the instrument can be configured as a full-duplex 9 600 Baud datalink. The Tellurometer was invented in 1957 by the late Dr. Trevor Wadley of …
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Objective Bayesian Analysis of Kullback-Liebler Divergence of two Multivariate Normal Distributions with Common Covariance Matrix and Star-shape Gaussian Graphical Model
… normal populations, which is proportional to the distance between the two means, weighted by the common precision matrix. We use the Cholesky decomposition for re-parameterization of the precision matrix. The KL divergence is a true distance measurement for divergence between the two multivariate …
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Single View Coplanar Photogrammetry and Uncertainty Analysis for Traffic Accident Reconstruction
… is defined as the science of measuring distances and objects by using photographs. Rapid advances in computer technology and digital photography in recent years have resulted in growing applications of digital photogrammetry. Although various aspects of photogrammetry have been …
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Efficient Authentication in High Security Wireless Sensor Networks
… algorithms. The second contribution, Distance-Based Message Authentication, focuses on physical layer security to reject messages, based on distance measurement, as early as possible. Practical experiments evaluate ranging accuracy and optimisations. This work therefore improves WSN …
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