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By " open access " to the work we mean its availability ( 2.1 ) on the public internet , ( 2.2 ) free of charge for everyone with an internet connection , ( 2.3 ) in an archive , repository , database , or other collection compliant with the Open Archives Initiative ( OAI ) metadata harvesting protocol , and ( 2.4 ) with some label indicating that the copyright holder has consented in advance to unrestricted reading , downloading , copying , sharing , storing , printing , searching , linking , and crawling . " I've come to see that the inner-city economy in the most distressed areas rests on three props : low-wage jobs , welfare payments , and the idiosyncratic , irregular underground economy based on drug dealing , street crime , bartering , begging , sharing , exchanging , " he said . We have difficulty grasping how the nature of sovereignty has altered as the role of states has shifted and , as a consequence , we use a huge variety of inexact terms-eroding , diffusing , shifting , diminishing , maturing , pooling , sharing , leaking , evaporating11-in an effort to describe the capacity of states to exercise their sovereign rights .