Zipf’s law in hierarchically ordered open system
نویسندگان
چکیده
منابع مشابه
Hierarchically ordered oxides
Porous silica, niobia, and titania with three-dimensional structures patterned over multiple length scales were prepared by combining micromolding, polystyrene sphere templating, and cooperative assembly of inorganic sol-gel species with amphiphilic triblock copolymers. The resulting materials show hierarchical ordering over several discrete and tunable length scales ranging from 10 nanometers ...
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A series of novel functionalised dumbbell-shaped bifullerenes in which two [5.0] pentakis-adducts of C60 are covalently connected by cyclic bismalonates were synthesised. These dimeric compounds, carrying various combinations of hydrophilic and hydrophobic addends, self-assemble in aqueous solution towards supramolecular architectures of different structural complexity as observed by cryogenic ...
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Using theoretical models, we undertake the first investigation into the rich behavior that emerges when binary particle mixtures are blended with microphase-separating copolymers. We isolate an example of coupled self-assembly in such materials, where the system undergoes a nanoscale ordering of the particles along with a phase transformation in the copolymer matrix. Furthermore, the self-assem...
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Formal concept analysis is a method of exploratory data analysis that aims at the extraction of natural clusters from object–attribute data tables. The clusters, called formal concepts, are naturally interpreted as human-perceived concepts in a traditional sense and can be partially ordered by a subconcept–superconcept hierarchy. The hierarchical structure of formal concepts (so-called concept ...
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ژورنال
عنوان ژورنال: Jahrbuch für Regionalwissenschaft
سال: 2011
ISSN: 0173-7600,1613-9836
DOI: 10.1007/s10037-011-0056-8