The successful operation of NATO missions requires the effective and secure sharing of information among coalition partners and external organizations, while avoiding the disclosure of sensitive information to unauthorized users. To resolve the conflict between confidentiality and availability in a dynamic coalition and network environment while being able to dynamically respond to changes in p...

the both atlantic side relations from the ancient time had been faced with too much challenge but the continuing of this relation is due to the common political and economical interests. the upper atlantic and the two organizations (nato, eu) still exist to gain the essential goals and the political and security connection which are boosting with the economical integration at the same time. but...

the end of the cold war and the disintegration of the soviet :union: marked the start of a new era in international relations. when russia's power and influence weakened, some newly independent states of central asia and the caucasus have taken tendency toward relation with west. for europe resource of new countries notably oil and gas was very important for independent from russia energy....

We discuss the application of random walks to generating a random basis of a totally unimodular matrix and to solving a linear program with such a constraint matrix. We also derive polynomial upper bounds on the combinatorial diameter of an associated polyhedron. •Supported by NATO grant RG0088/89 tSupported by NSF grants CCR-8900112, CCR-9024935 and NATO grant RG0088/89