نتایج جستجو برای: v fractal model

تعداد نتایج: 2380675  

Journal: :journal of medical signals and sensors 0
alireza shirazi nodeh hossein ahmadi noubari hossein rabbani alireza mehri dehnavi

recent studies on wavelet transform and fractal modeling applied on mammograms for the detection of cancerous tissues indicate that microcalcifications and masses can be utilized for the study of the morphology and diagnosis of cancerous cases. it is shown that the use of fractal modeling, as applied to a given image, can clearly discern cancerous zones from noncancerous areas. in this paper, f...

2011
Kurt Sandkuhl Marite Kirikova

The paper focuses on the use of the fractal paradigm in enterprise modeling. It investigates whether the properties of fractal organizations can be applied in business analysis and whether this results in useful outcomes and new insights. Based on an adaptation and operationalization of properties of fractal organizations, two real-world cases are analyzed using the adapted properties. The cont...

1992
I. PROCACCIA A. BRANDENBURG M. H. JENSEN A. VINCENT

The fractal dimension of iso-vorticity surfaces is estimated from a 3-dimensional simulation of homogeneous turbulence at moderate Reynolds numbers, performed by Vincent and Meneguzzi. The results are found to be compatible with a recently proposed theory which predicts a crossover from a 2-dimensional geometry at small scales to a fractal geometry at larger scales, with a dimension D = 2.5 + 1...

The unsmooth boundary will greatly affect motion morphology of a shallow water wave, and a fractal space is introduced to establish a generalized KdV-Burgers equation with fractal derivatives. The semi-inverse method is used to establish a fractal variational formulation of the problem, which provides conservation laws in an energy form in the fractal space and possible solution structures of t...

Journal: :Physical review. B, Condensed matter 1986
Fourcade Tremblay

Diffusion noise and Nyquist noise on fractal lattices and percolation clusters are discussed in the highand low-frequency limits. Diffusion noise can also be considered as a sort of "1/f noise. " Even for system sizes much larger than the correlation length, the fractal structure of the percolation clusters reveals itself at sufficiently high frequencies through the anomalous frequency dependen...

Journal: :Physical review letters 2006
K-I Goh G Salvi B Kahng D Kim

We find that the fractal scaling in a class of scale-free networks originates from the underlying tree structure called a skeleton, a special type of spanning tree based on the edge betweenness centrality. The fractal skeleton has the property of the critical branching tree. The original fractal networks are viewed as a fractal skeleton dressed with local shortcuts. An in silico model with both...

Journal: :JCP 2012
Wenfang Sun Linfeng Bai Xilong Qu

Fractal property of the knowledge of supply chain is confirmed, and the concept of fractal integration is presented. And the knowledge of supply chain is fractal integrated by building modularization fractal knowledge integration network independent of the organization structure. The process of fractal integration of the knowledge is divided into five stages: acquisition, transition, applicatio...

Journal: :Applied and environmental microbiology 1992
T Matsuyama M Matsushita

The ability to form a fractal colony was shown to be common among several species of the family Enterobacteriaceae. Bacterial spreading growth in a two-dimensional field of nutrient concentration was indicated to be important for this experimental self-similar morphogenesis. As a basic analogy, the diffusion-limited aggregation model was suggested. Fractal dimensions of colonies were mostly in ...

2001
Elke Naujokat Uwe Kiencke Christian-Friedrich Vahl

Das Erreichen einer den aktuellen und individuellen Bedürfnissen des Patienten angepaßten Perfusion ist Gegenstand vieler Forschungsprojekte im Bereich der Herzchirurgie. Das heute verfügbare Patientenmonitoring reicht jedoch nicht aus, um den aktuellen Patientenzustand genau zu erfassen. Ein Beobachtersystem, das wichtige Patientenparameter intraoperativ schätzt, kann hier Abhilfe schaffen. De...

Journal: :International Journal of Modern Physics A 2020

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید