Based on CGEM and with the application of input-output analysis and optimistic control theory, a two-level model of macroeconomic management is established.

以CGEM为基础，综合运用投入产出分析和最优控制理论，设计出一个二层次的宏观经济管理模型。

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With optimistic concurrency control, the database manager releases the row or page locks immediately after a read operation.

通过使用乐观并发控制，数据库管理器在完成读操作之后可以立即释放行或页锁。

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Optimistic locking is an extremely efficient concurrency control method that guarantees data integrity without placing any physical lock in the database.

乐观锁是一个极其有效的并发性控制方法，它可以确保数据完整性而又无需在数据库中放置任何物理锁。

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Gun control advocates acknowledge there will be more legal challenges by gun rights groups, but they remain optimistic most gun laws in the U.S.

VOA: standard.2010.07.06

Market participants should keep in mind that since it is going to take some horrendous economic data (yes, it can get even worse) to convince Captain Bernanke to fire up the engines, that very data may spook the markets, so it is probably overly optimistic to expect things to run on cruise control for the next few months.

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This makes them more optimistic than liberals, more likely to feel in control of their lives and therefore happier.

ECONOMIST: Lexington: The joys of parenthood | The

Mr Bloomberg, a strong supporter of gun control, has said he is cautiously optimistic of winning over Congress, which votes on the issue next month.

BBC: Michael Bloomberg funds $12m US gun law campaign