منابع مشابه
VAN Method Lacks Validity
In 1992, experts at the National Science Foundation Workshop titled "Low-Frequency Electrical Precursors to Earthquakes: Fact or Fiction?" concluded that "seismic electric signals observed in Greece are generated in the Earth, and the apparent correlation with earthquakes is promising" [Park, 1992]. On March 5 and 26,1993, strong earthquakes hit Pirgos City, Greece. Despite heavy damage, there ...
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We give a detailed account of the classical Van Kampen method for computing presentations of fundamental groups of complements of complex algebraic curves, and of a variant of this method, working with arbitrary projections (even with vertical asymptotes). Introduction In the 1930’s, Van Kampen described a general technique for computing presentations of fundamental groups of complements of com...
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Distributed objects bring to distributed computing such desirable properties of modularisation, abstraction and reuse easing the burden of development and maintenance by diminishing the gap between implementation and real-world objects. Distributed objects, however, need a consistent framework in which inter-object communication may take place. The Common Object Request Broker Architecture (COR...
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Dentin is a mesenchymal tissue, and, as such, is based on a collagenous matrix that is reinforced by apatite mineral. Collagen fibrils show piezoelectricity, a phenomenon that is used by piezoresponse force microscopy (PFM) to obtain high-resolution images. We applied PFM to image human dentin with 10-nm resolution, and to test the hypothesis that zones of piezoactivity, indicating the presence...
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ژورنال
عنوان ژورنال: Eos, Transactions American Geophysical Union
سال: 1998
ISSN: 0096-3941
DOI: 10.1029/98eo00418