نتایج جستجو برای: mean weighted diameter
تعداد نتایج: 768343 فیلتر نتایج به سال:
In percentile method, percentiles of the diameter distribution are predicted with a system of models. The continuous empirical diameter distribution function is then obtained by interpolating between the predicted values of percentiles. In Finland, the distribution is typically modelled as a basal-area weighted distribution, which is transformed to a traditional density function for application...
Introduction In this abstract we show that the diffusion-weighted (DW) signal from the extracellular space can be used to estimate white matter microstructure parameters, such as axon diameter distribution and volume fraction. A key challenge in Diffusion-Weighted Imaging (DWI) is to estimate more specific features of tissue microstructure than existing methods such as Diffusion Tensor Imaging ...
A precise, accurate and well documented method for the sizing and counting of microbubbles is essential for all aspects of quantitative microbubble-enhanced ultrasound imaging. The efficacy of (a) electro-impedance volumetric zone sensing (ES) also called a Coulter counter/multisizer; (b) optical microscopy (OM); and (c) laser diffraction (LD), for the sizing and counting of microbubbles was as...
In this paper we propose a new algorithm for computing the diameter of directed unweighted graphs. Even though, in the worst case, this algorithm has complexity O(nm), where n is the number of nodes and m is the number of edges of the graph, we experimentally show that in practice our method works in O(m) time. Moreover, we show how to extend our algorithm to the case of directed weighted graph...
We present a new randomized algorithm for computing the diameter of a weighted directed graph. The algorithm runs in Õ(Mn 2+3)/(ω+1)) time, where ω < 2.376 is the exponent of fast matrix multiplication, n is the number of vertices of the graph, and the edge weights are integers in {−M, . . . , 0, . . . ,M}. For bounded integer weights the running time is O(n) and if ω = 2+ o(1) it is Õ(n). This...
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