نتایج جستجو برای: track density

تعداد نتایج: 471638  

ژورنال: Journal of Railway Research 2014
Giannakos, Konstantinos,

During the study for the dimensioning as well as the selection of the individual materials constituting a railway track, the ballast and the substructure present residual deformations, directly related to the deterioration of the geometry of the track. The slighter the residual deformations and the slower their alteration over time is, the better the quality of the track. The actions acting ...

2017
Asger B. Abrahamsen Niklas Magnusson Bogi B. Jensen Dong Liu Henk Polinder

An MgB2 race track coil intended for demonstrating a down scaled pole of a 10 MW direct drive wind turbine generator has been designed. The coil consists of 10 double pancake coils stacked into a race track coil with a cross section of 84 mm x 80 mm. The length of the straight section is 0.5 m and the diameter of the end sections is 0.3 m. Expanded to a straight section of 3.1 m it will produce...

2008
Adam J. Dean Jack W. Langelaan Sean N. Brennan Thomas D. Larson

This work develops an algorithm to initialize an Unscented Kalman Filter using a Particle Filter for applications with initial non-Gaussian probability density functions. The method is applied to estimating the position of a road vehicle along a one-mile test track using terrain-based localization where the pitch response of the vehicle is compared to a premeasured pitch map of the test track. ...

Journal: :The Journal of the Acoustical Society of America 2013
Caglar Yardim Peter Gerstoft William S Hodgkiss

Sequential Bayesian methods such as particle filters have been used to track a moving source in an unknown and space/time-evolving ocean environment. These methods treat both the source and the ocean parameters as non-stationary unknown random variables and track them via the multivariate posterior probability density function. Particle filters are numerical methods that can operate on nonlinea...

2017
Stanley Thomas THOMAS R. STANLEY

Many methods have been used to survey red fox (Vulpes vulpes) and gray fox (Urocyon dnereoargenteus) populations. However, none has proven entirely satisfactory, and wild foxes remain one of the most difficult economically important wildlife species to monitor. In this study we evaluated the reliability of a snow track survey method for foxes by investigating whether the average number of road ...

2012
T. Bierschenk P. Kluth M. Rodriguez

Synchrotron based Small Angle X-ray Scattering (SAXS) give evidence of SHI irradiation induced ion-tracks in a-Ge. The scattering spectra of the ion-tracks can be fitted by using a model function of a cylindrical electron density distribution with an internal core shell structure. Core and shell are both of constant electron density but one being overthe other under-dense with respect to the su...

2009
A. Lebedev C. Höhne I. Kisel G. Ososkov

In this contribution we present new developments and results for the LIT track reconstruction package for CBM in the CbmRoot framework. The reconstruction package is organized to be flexible with respect to feasibility studies of different physics channels and to optimization of the detector geometries. The tracking software has been redesigned to make it more general and to simplify the suppor...

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 2009
Philbert S Tsai John P Kaufhold Pablo Blinder Beth Friedman Patrick J Drew Harvey J Karten Patrick D Lyden David Kleinfeld

It is well known that the density of neurons varies within the adult brain. In neocortex, this includes variations in neuronal density between different lamina as well as between different regions. Yet the concomitant variation of the microvessels is largely uncharted. Here, we present automated histological, imaging, and analysis tools to simultaneously map the locations of all neuronal and no...

Journal: :Journal of physics 2021

Solid state nuclear track detection technology is an important based on the measurement of density and geometric parameters, but manual difficult to ensure accuracy efficiency. Aiming at uneven brightness, low contrast noise pollution images, this paper proposes a method acquisition, brightness correction, de-noising filter, target segmentation, boundary extraction, recognition solid image, fin...

2001
A. Baird

After 2001 the upgraded ep collider HERA will provide an about five times higher luminosity for the two experiments H1 and ZEUS. In order to cope with the expected higher event rates the H1 collaboration is building a track based trigger system, the Fast Track Trigger (FTT). It will be integrated in the first three levels (L1–L3) of the H1 trigger scheme to provide higher selectivity for events...

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