Jens Feder Fractal Structures and Self Organization (TMR network) Fractals; Flow in Porous Media; Granular Materials; Fracture Mechanics; Friction. Available in: Hardcover. This lovely little book will take off and fly on its own power, but the author has asked me to write a few words, and one. Jens Feder is the author of Fractals ( avg rating, 2 ratings, 0 reviews, published ), Fractals in physics ( avg rating, 0 ratings, 0 reviews.

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After Koljonen et al. Although reproducibility is satisfactory for practical mapping purposes, the utilization of the data in variograms covering the entire concentration range could be inappropriate for some elements.

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Such provinces may host economically profitable deposits more frequently than other areas, 2 improvement of cost efficiency in geochemical prospecting by systematic fol- low-up investigations, working step by step increasing sample density within decreasing target areas selected on the basis of the principles of fractal geometry. Stream sediment was collected at those sites where sam- pling was possible.

With fast shipping, low prices, friendly service and over 1, in stock items – you’re bound to find what you want, at a price you’ll love! Unauthorised returns will not be accepted. See discussions, stats, and author profiles for this publication at: Help us Corrections Found an error or omission? Please note that corrections may take a couple of weeks to filter through the various RePEc services. However, the fractal dimension, D, tends to be overestimated when employing untransformed log-normal data, and the results should be treated with care.


The Hurst exponent H for A1 is calculated to 0. Received 1 December DOI: For readers that are not familiar with fractals, we first present a short general summary of the concept and a brief description of some meth- ods for testing of fractal dimensions. Abstract A gas displacing a high-viscosity liquid in a porous medium generates a fractal finger structure similar to fracgals obtained in diffusion-limited aggregation DLA.

Phys. Rev. A 36, () – Dynamics of viscous-fingering fractals in porous media

From our data-sets feactals irregularly spaced geochemical samples, we have estimated values in a square grid by Kriging. Fractals are shapes that look basically the same on all scales of magnification – – they are self-like. A three-dimensional view of mineralization in the Still- water J-M Reef. Last but not least, we are all grateful to Jens for not having allowed undue personal modesty to deprive us of accounts of his own group’s varied and excellent work.

Weyl fermions are observed in a solid. Description This lovely little book will take off and fly on its own power, but the author has asked me to write a few words, and one should not say no to a friend.

Jens Feder (Author of Fractals)

Simulation of geological surfaces using fractals. This is because our items are shipped from different locations. Please view eBay estimated delivery times at the top of the listing. This fractal dimension must be a lower limit because of the Kriging which, in ad- dition to smooth contours, produces rather straight, artificial coastlines along the border of the survey area. A 36— Published 1 July Such provinces could be detected at relatively low cost through analysis of wide-spread samples.


The length of the longest finger as a function of time is accurately described by the results of a new form of DLA simulation which in addition to DLA structures gives the time dependence in a form suitable for comparison with experiments.

If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. The factor 2 is intro- duced following a common convention. Geochemical Atlas of Fin- land: Enter the email address you signed up with and we’ll email you a reset link. The grade units given are proportional to the measured grades.

Analysis of variogrammes and other tests carried out on geochemical dispersion patterns contents of 21 acid soluble elements in samples of stream sediment within akm 2 survey area in northern Fennoscandia indicates a fractal dimension of fder 2. For each point on the grid we solved the Kriging equations, including all measured concentrations within a circle o f 50 km.

This allows to link your profile to this item. Click here to sign up. This dimension was found to exist between 5 and km, which are the limits set by the sampling distance fexer the size of the survey area.

You can help adding them by using this form. See general information about how to correct material in RePEc. A fractal approach to the relationship between ore grade and tonnage.