However, there are some problems about the conventional structure: (1) the sample size of the quiet periods may not be enough to get good sensing performance; (2) all CR communications have to be postponed during channel sensing; (3) the placement of the quiet periods causes an additional burden of synchronization.
He conceded that there was some problem in this country about unemployed youth and school dropouts, but the administration's retraining program, he said, was no fit solution; for one thing, it would "cost ten thousand dollars for each recruit".
There are some problems we can't do much about — hurricaines and earthquakes, for example.
"This is not about some problem about the integrity of the feast," he said.
At present, through analyzing a large number of actual test data, we discovered that there are some common problems about the indicators and methodologies used in the field-testing.
More importantly, here, and in the Report, Rothschild implicitly allows for a dialogue between customer and contractor; the phrase "the contractor does it (if he can)" suggests that there may be some discussion about whether the problem set is soluble by science,21 which becomes an important element of the role of Chief Scientists.
"He looked like he was having some problem, like he was upset about something".
That a work of the imagination has to be "really" about some problem is, again, an heir of Socialist Realism.
Zakaras: What are some things about this problem that people don't fully get?
There are some studies about the problem of biological complexity.
