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Leadership is a key ingredient in the ultimate success or failure of any organization. In this article the authors review the research on leadership in general and then focus on how leadership in the academic world is similar to, yet distinct from, leadership in the private sector. Included in this discussion are a description of how leadership in colleges and universities has evolved, the characteristics that are unique to higher education together with their implications for effective leadership, and consideration of the immense challenges academic leaders face as they attempt to keep higher education responsive to the needs of business and industry. The authors also address the emergence of student affairs administration and the current crisis in academic leadership.

Automated trust negotiation is the process of establishing trust between entities with no prior relationship through the iterative disclosure of digital credentials. One approach to negotiating trust is for the participants to exchange access control policies to inform each other of the requirements for establishing trust. When a policy is received at runtime, a compliance checker determines which credentials satisfy the policy so they can be disclosed. In situations where several sets of credentials satisfy a policy and some of the credentials are sensitive, a compliance checker that generates all the sets is necessary to insure that the negotiation succeeds whenever possible. Compliance checkers designed for trust management do not usually generate all the satisfying sets. In this thesis, we present two practical algorithms for generating all satisfying sets given a compliance checker that generates only one set. The ability to generate all of the combinations provides greater flexibility in how the system or user establishes trust. For example, the least sensitive credential combination could be disclosed first. These ideas have been implemented in TrustBuilder, our prototype system for trust negotiation.

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