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 2546 for “"median"”.
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MODELING MEDIAN HOUSEHOLD INCOME DISTRIBUTION
… we are going to use U.S. Census data to study median household income distribution for 13 U.S. counties and seven U.S. states. Over the years, researchers have fitted income data with various probability distributions. During our review of the literature, we saw that researchers do not agree on …
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Oligodendrocytes of the adult median eminence
… studies highlighting that OPCs in the adult median eminence (ME) are highly proliferative and rapidly differentiate in response to nutritional signals. As such, these data raise questions about new OL and myelin generation in the ME at baseline, the fate of pre-existing OLs here, and the …
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Oligodendrocytes of the adult hypothalamic median eminence
The median eminence (ME) of the hypothalamus is a dynamic structure able to rapidly respond to nutrient availability. Both immature oligodendrocyte precursor cells (OPCs) and mature myelinating oligodendrocytes (MOLs) are found in this region in adults. While proliferation of ME OPCs has been shown …
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Flash filter : median filtering by insertion sort
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1990.
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A discrete equal-capacity p-Median problem
… with the analysis of a discrete equal-capacity p-median problem, where the costs are directly proportional to the shipping distance and the amount shipped. A mixed integer programming formulation of the unbalanced, but equal capacitated case is analyzed. First we develop a dynamic programming …
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Fast parallel algorithms for sorting and median finding
Many sorting algorithms that perform well on uniformly distributed data suffer significant performance degradation on non-random data. Unfortunately many real-world applications require sorting on data that is not uniformly distributed. In this thesis, we propose a new strategy, A-ranksort, for …
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Accelerated Life Test Modeling Using Median Rank Regression
… imposed by maximum likelihood procedures, we use median rank regression to fit and assess our lifetime model. We improve the model fit using a novel incorporation of desirability functions and ultimately evaluate our proposed methods using an extensive simulation study. Finally, we provide an …
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Evaluation of concrete median barrier delineation under poor visibility conditions
… and visibility test were conducted for concrete median barrier delineation. PENNDOT was encountering with delineators becoming detached due to harsh conditions in the roadside areas, as well as visibility problems in spot locations prone to fog. From the results of the research it was recommended …
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Implementation of Directional Median Filtering using Field Programmable Gate Arrays
<p>Median filtering is a non-linear filtering technique which is effective in removing impulsive noise from data. In this thesis, directional median filtering has been implemented using cumulative histogram of samples in several directions. Different methods to implement directional median …
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Quantization of color images using the modified median cut algorithm
… a new algorithm, based on Heckbert's original median cut procedure, for creating near-original quality images using a small color palette. We have found that slight changes to Heckbert's original algorithm yield dramatic improvements in quantizer performance. The color quantization problem is …
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Permanent misperceptions and the public sector: the median voter model
… of public activities was derived by using the median voter model. For example, it was demonstrated that the permanent underestimation of marginal costs could lead to a contraction rather than an expansion of the public sector while the simultaneous underestimation of costs and benefits could …
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Distributed Training with Heterogeneous Data: Bridging Median- and Mean-Based Algorithms
… there is a growing interest in the study of median-based algorithms for distributed non-convex optimization. Two prominent examples include signSGD with majority vote, an effective approach for communication reduction via 1-bit compression on the local gradients, and medianSGD, an algorithm …
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Regeneration of Meissner Corpuscles in Diabetic Mice Following Median Nerve Crush
… qualitative and quantitative changes following a median nerve cryocrush of the left forepaw. Right forepaws were used for non-crush controls. Digits II and III from both forepaws were formalin-fixed, frozen sectioned and silver-impregnated to allow for light microscopic examination of the …
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Median filtering for target detection in an airborne threat warning system
… and noise. The use of unsharp masking with median filter masking operators is recommended. Experiments involving simulated imagery are described, and the performance of median filter unsharp masking is found to be superior to that of the Laplacian filter, the linear point detection filter, …
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Weighted median filters and related nonlinear filters with applications in image processing
… the most popular nonlinear filters is weighted median filtering. The main objective of this thesis is to analyse the statistical and deterministic properties of the weighted median filter and some related nonlinear filters with applications in image processing. The output distribution of the …
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Improvements on conventional VSP processing and the use of spatial median filters
Includes bibliographical references.
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A refraction study of the median ridge of the Kane fracture zone
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric and Planetary Sciences, 1987.
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The happy median? : an examination of the role of partisanship on social spending
This thesis examines the effect of party-level partisanship on social spending outcomes. Building a model in which party-politician bargaining plays a central role in determining the passage of bills, this paper develops a theory predicting the superior performance of moderate parties in proposing …
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Evaluation of the need for longitudinal median joints in bridge decks on dual structures
<p>ABSTRACT</p> <p>In the State of Iowa, bridge widths are typically limited to 60-ft. Although the justification for 60-ft is somewhat unknown, there is a desire, in some cases, to build wider bridges. For example, when dual bridges are constructed in urban areas they are frequently constructed …
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