Hackers can perform a DDoS attack by creating 'bot' computers by infecting thousands of home computers with malware, and instructing them to all attack a certain site at once, bringing it down.
In each block of episodes, the cast and crew would often film all scenes held in certain locations at once, for instance all scenes set on the Grid, although taking place in different parts of each episodes, would all be filmed together before moving on to another set.
Using this namespace information, researchers can put heavier weights on terms in certain namespaces at once, thus grouping nodes that have related terms in those particular namespaces.
He laments the fact that accounting rules require PeoplePC to recognize revenue over the life of a contract, and certain losses all at once, even though the company sells its receivables and takes in cash immediately.
He has the kind of singularity of presence I've noticed in certain extraordinary people; at once utterly familiar and totally strange in their carriage and appearance.
But certain historical continuities appear at once to anyone with a memory of history's grosser follies.
To greet them again is to feel a certain comfort that something at once hilarious and mystical will occur.
If the rain is heavy, all the amphibians in a certain neighborhood may move at once, hundreds at a time, a migration of biblical scale.
It's true that Benjamin's condition imposes a certain detachment: he is at once innocent and ancient, almost never who he appears to be.
It has to do with the recurrence of a certain kind of figure, at once crucial and dispensable, virtuosic and maladroit, in sitcoms and TV dramas.
