比起更广泛且更一般的记录类型，它们还表现出对变更管理系统的维护者更少的约束。
They also present fewer constraints to the maintainers of the change management system than broader and more generic record types.
这些架构可以帮助我们理解怎样构建内容管理模型，身份，以及声誉系统，在鼓励约束性的同时，也鼓励意外性。
These frameworks can help us understand how to develop curation models, identity, and reputation systems, and how to encourage serendipity as well as engagement.
当然，作为人力资源管理系统的一部分，激励机制只有和约束机制、牵引机制、竞争机制协同作用，才能发挥最大的效应。
Of course, motivation mechanism, as one part of human resource management system, can make larger use only with restriction mechanism, traction mechanism and competition mechanism.
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