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Analyzing data representing multifarious trajectories is central to the many fields in Science and Engineering; for example, trajectories representing a tennis serve, a gymnast’s parallel bar routine, progression/remission of disease and so on. We present a novel geometric algorithm for performing statistical analysis of trajectories with distinct number of samples representing longitudinal (or temporal)...
Tail bits in the RESET process influence the distribution of resistive parameters, and will dramatically decrease the uniformity in high electric stimuli region. In this study, such phenomena can be explained as non-uniform distribution of defects in the insulating layer and high defects density in the bottleneck region of conductive filament (CF). Then departing from defects' distribution function,...
Shape morphometry of subcortical surfaces plays an important role in analyzing normal developmental changes as well as in quantifying disease-related effects in the human brain. We present a geometric approach for joint registration, deformation, and statistical analysis of shapes of subcortical surfaces. Here, subcortical surfaces are mathematically represented by vector-fields, termed square-root...
It is well known that preventive tests have been widely used as an important means to ensure reliable operation of the power cable. Nevertheless, in the early stages of insulation deterioration, the traditional preventive tests cannot effectively detect the faint abnormal signals caused by defects. As insulation failure usually starts with PD activities, which is not only one of the primary reasons...
The cellular heterogeneity and complex tissue architecture of most tumor samples is a major obstacle in image analysis on standard hematoxylin and eosin-stained (H&E) tissue sections. A mixture of cancer and normal cells complicates the interpretation of their cytological profiles. Furthermore, spatial arrangement and architectural organization of cells are generally not reflected in cellular...
In this paper, the electromagnetic (EM) environment inside four kinds of enclosure are analyzed by statistical method. The external electromagnetic energy is coupled into enclosure through nine kinds of aperture array with equivalent areas respectively. The computational results are given in the form of probability density function (PDF) to show the interior EM characteristics. Statistics can effectively...
This paper establishes a comparison of sea clutter properties and radar detection performance depending on polarisation and conditions of observation. A theoretical approach based on the most common models for sea clutter properties first shows that the polarisation yielding the best performance depends on a precise set of parameters, namely the grazing angle, wind speed and radar height. The models...
In this paper, the electromagnetic (EM) environmental characteristics for electrically large enclosures under external EM illumination are discussed. Because of the immense computational cost and high frequency response sensitivity (HFRS), it is difficult to assess universal rules of the EM environment in the enclosure based on deterministic solutions. However, some of the field statistics are found...
In this short paper we briefly revise the criteria defining near and far field. After an extension of the radian sphere notion to finite size sources, we generalize the amplitude and phase criteria for arbitrary source structures. Next we identify with a representative example the wavelength distance where the near field has reached the shape of the far field directivity, then we quantify the difference...
Information underlies political participation, making information critical to governance and political systems, particularly in democracies. Furthermore, institutions critically shape distribution of information. In this sense, critical analysis of information flows within the Institutional Analysis and Development (IAD) Framework would importantly contribute to improved understanding of the political...
In this study the case of the energy consumption profile of the Aristotle University of Thessaloniki, in Greece, is presented and statistically analyzed by clustering methods on the basis of seasonal daily load curves and load shape factors, using data from real-time measurements. The results indicate that the categorization of active power demand in university buildings is an extremely useful tool...
A new license plate localization algorithm is presented. Execution times of these operations can rather be long, especially where the image consists of large amount of either vehicle's linked components or the other existing objects. This algorithm combines the image processing techniques with some statistical methods and eventually a pattern checking method is also added. Here, minimum rectangle...
Vehicular ad hoc networks have emerged as a promising area of research in academic fields. However, to design a realistic coverage algorithm for vehicular networks presents a challenge due to the irregularity of the service area, assorted mobility patterns, and resource constraints. In order to resolve these problems, this paper proposes a genetic algorithm-based sparse coverage with statistical analysis,...
Partial Discharge (PD) detection and diagnostics is an established tool to test the condition of the insulation in HV-facilities. One basic question while performing PD measurements is the one concerning the type and location of the defect. Under AC stress there are several instruments to interpret the measured PD, most important the phase angle histogram. At DC voltages this approach is inapplicable...
A critical step of on-line handwritten diagram recognition is the segmentation between text and symbols. It is still an open problem in several approaches of the literature. However, for a human operator, text/symbol segmentation is an easy task and does not even need understanding diagram semantics. It is done thanks to the use of both structural knowledge and statistical analysis. A human operator...
The BTEC (Basic Travel Expression Corpus) is developed by NICT, Japan and has a wide-coverage of basic Japanese travel expressions with English counterparts for the purpose of using it as the basic data for developing high quality speech translation system. The English counterpart of this corpus has been translated Hindi manually. It is used for development of English-Hindi speech translation system...
We present a method for shape matching that approximates group-wise shape registration by reducing the problem to a 1-D registration. First, a novel medial curve method is proposed for computing a 1-D description of the shape. Second, a group-wise registration of the geometric descriptor is performed by directly minimizing the group variance. The resulting registration is used to adjust a global shape...
The paper proposes a new mobility model able to properly reproduce the spatial, temporal and social features that can be observed in real mobility datasets. The model, named Geo-CoMM, is based on the quantities that guide human mobility and their probability distributions by directly extracting their setting from the statistical analysis of GPS-based traces. In Geo-CoMM, people move within a set of...
The multiple point geostatistics can not reproduce the continuous shape of the channel due to the limitation of the algorithm with random draw of the simulated value. A new method is proposed which integrates the random walk process with multiple point geostatistics. First the random walk process produces the channel main streamline, then the draw of simulated value in multiple point geostatistics...
Low frequency oscillations in the power grid can be classified into three types associated with power system events, non-obvious disturbances, and normal power system operations. A statistical analysis is introduced for the three types of oscillations in the Eastern Interconnection (EI) between 2009 and 2010 supported by the North American power Frequency Monitoring Network (FNET). Six “Type III”...
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