کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
805423 905140 2007 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A note on decoupling of local and global behaviours for the Dagum Random Field
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
A note on decoupling of local and global behaviours for the Dagum Random Field
چکیده انگلیسی

Self-affinity versus   decoupling: this dichotomy represents a breakthrough with respect to the previous literature, that has grown under the dogma of self-affinity. The word decoupling refers to those correlation functions allowing to treat independently the Hausdorff–Besicovitch dimension and Hurst effect parameters. The former is a roughness measure associated to profiles or surfaces. The latter reflects possible persistent or antipersistent behaviours of the associated random process or random field. Thus, the decoupling philosophy opens new avenues for the analysis and interpretation of local and global properties of random fields. In this paper, we introduce a new class of isotropic correlation functions, called Dagum, show its permissibility on any nn-dimensional space, and analyse its attitudes with respect to decoupling. Interesting aspects arise from an intensive simulation study, conducted in one and two dimensions. In particular, it seems that the decoupling attitude may depend on the space dimension.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Probabilistic Engineering Mechanics - Volume 22, Issue 4, October 2007, Pages 320–329
نویسندگان
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