Our empirical investigations use problem instances from different computational complexity classes, NP-Complete (NPC) and PSPACE-complete (PSC), that exhibit similar solution difficulty but differ in verification difficulty.
Resistance from America's national security complex, problems of verification, and the difficulty of convincing other nations to disarm, thwarted nuclear disarmament.
Although valuable as a source of data on intent to emigrate, the difficulties with verification data are multiple: health professionals may emigrate without applying for verification, they may apply for verification retrospectively (after emigration has already occurred), they may apply for verification on several occasions, or they may apply and not follow through with emigration [ 17].
"You never want to say never, but age verification has serious conceptual difficulties," said Oren Etzioni, an artificial intelligence specialist and computer scientist at the University of Washington who has founded several technology companies.
Since this theorem eases difficulties in verification of the coercivity condition but requires conditions of a form similar to Lyapunov-type theorems for stochastic lumped-parameter systems, it has a potential application to other stochastic distributed-parameter systems.
The need for such a verification process highlights the difficulties competition organizers face in trying to authenticate images.
The Open Rights Group, which campaigns for privacy and free speech online, has said: "While preventing children from seeing pornography is a worthy aim, age verification is fraught with difficulties if infringements of privacy and free expression are to be avoided".
Mr. Reagan told Mr. Mitterrand that he believed that the Soviet Union "may be more serious than ever before" in seeking an arms agreement but that the verification issue remained a difficulty, Mr. Speakes said.
Also, the results enabled verification of the relative difficulty of each item throughout the latent continuum and comparison with the distribution of person parameters (item/person maps, Figs. 1, 2, and 3), which would not have been possible using traditional psychometric statistical analyses.
The CIs, end-users and verification panelist all reported difficulty in identifying and assessing these impacts for any single study.
