905 search results - page 96 / 181 » The Case Against Micropayments |
WWW
2010
ACM
14 years 4 months ago
2010
ACM
We propose a novel method, based on concepts from expander graphs, to sample communities in networks. We show that our sampling method, unlike previous techniques, produces subgra...
WISTP
2010
Springer
14 years 4 months ago
2010
Springer
The deployment of Next-Generation Networks (NGN) is a challenge that requires integrating heterogeneous services into a global system of All-IP telecommunications. These networks c...
CCS
2010
ACM
14 years 4 months ago
2010
ACM
In distributed environments, statements from a number of principals, besides the central trusted party, may influence the derivations of authorization decisions. However, existin...
PERCOM
2009
ACM
14 years 4 months ago
2009
ACM
—Ensuring spontaneous ad hoc interoperation in decentralized ubiquitous computing environments is challenging, because of heterogeneous resources and divergent policies. Centrali...
CEC
2009
IEEE
14 years 4 months ago
2009
IEEE
— This paper examines the decentralized recognition of groups within a multiagent normative society in dynamic environments. In our case, a social group is defined based on the ...