Power control adopting cross-layer optimization has the advantages of developing present resources efficiently and improving the network performance.

在功率控制中引入跨层优化的机制，可以有效地开发现有资源，提高网络性能。

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We had properly isolated the data access layer, simplifying the optimization of queries (which had sometimes snuck into the business logic on previous projects).

我们适当的将数据访问进行了分层，简化了查询的优化（在之前的项目中数据访问有时会混合在业务逻辑中）。

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Software-defined networks will provide some of this flexibility by separating the control function from data forwarding, but there are additional capabilities emerging, he says, such as intelligent switching of wavelengths, the ability to mix dedicated bandwidth with best-efforts networks, and application layer network traffic optimization, e.g.

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