Movement exotic

The aim now is to seek a quantitative description of ionic random-walk movements. There are many exotic ways of stating the random-walk problem. It is said, for example, that a drunken sailor emerges from a bar. He intends to get back to his ship, but he is in no state to control the direction in which he takes a step. In other words, the direction of each step is completely random, all directions being equally likely. The question is On the average, how far does the drunken sailor progress in a time r ... 

Although it is clear that the presence of exotic (nonlocal) soapstone will provide the best information about population movements and/or... 

Of great use in such investigations are artifacts or materials that come from a known location. It is in this area that archaeological chemistry has made an enormous contribution. There are many cases of such movement in exotic materials, often in the form of rare stones or minerals. There were no natural sources of turquoise in ancient Mexico, for example, but tins beautiful blue-green stone was imported from the present state of New Mexico and used in the costumes and jeweliy of the elite in Aztec Mexico.. Archaeological chemistry had documented the sources of turquoise in the southwestern and found objects from Mexico that clearly came from those quarries. This example is discussed in more detail in Chap. 8, Case Studies. 

Standard Chartered, for example, has significant exposure to more exotic currencies in Asian, Middle Eastern, and African countries, and so is more at risk from additional market movements than a hank with almost exclusively domestic operations. The global, integrated nature of the bond markets also means that the foreign exchange exposure of a company must be evaluated and assessed for risk. 

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