culture has always been regarded as the most important element of human communities; we can easily observe cultural changes. what causes these changes has been a matter of controversy. the issues such as people’s increasingly getting detached from each other, psychopathy, behavioral abnormalities, traditions being increasingly faded away, malformation, extravagancy and value conversion into ant...

We review the problem of the tuneshift correction of symplectic maps and its applications to accelerator physics. The normal form techniques used to compute the correcting terms are outlined both in two and four dimensional phase space. A theorem which gives an upper bound to the growth of the coeecients of the correcting map is proved. Two ways of correcting the tuneshift are discussed: a comp...

A soil aggregate is “a group of primary soil particles that cohere to each other more strongly than to other surrounding particles.” Soil aggregates form through the combined action of aggregation and fragmentation processes. That is, attractive and disruptive forces act on the particles in the soil to cause greater cohesion among some particles, and groups of particles, than others. Most soils...