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With the characteristics of diversity, randomness, concurrency and decomposability, tasks in manufacturing field are very complicated, and so manufacturing grid(MG)should have considerable flexibility to deal with this problem. With the definition of node and arc, MG structure is converted into a small-world network. Given construction cost constraint, the problem of shortest task waiting time is transformed into the constrained optimization problem, and a corresponding flexibility analysis model based on average path length(APL)is proposed, and the premise of arc-length and node-distance are defined. The results of application example show that the analysis model is effective. 相似文献
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美术反映着社会生活美和自然美,并可创造艺术美,它以自身特有的手段来培养和发展幼儿的形象思维能力。幼儿对于美的感知又是多方面的,如何使孩子们充分地把他们对于美的感受在美术课中体现出来,这就需要教师采用多种教学的方式来挖掘其对于美的表达能力。在美术教学中往往出现孩子们兴趣不足、按部就班出现效仿雷同的现象,如何使孩子们积极、主动地发挥想象力,加快创作的步伐对于美术教学的是否成功显得尤为重要。 相似文献
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立足于数字图书馆的时代意义,结合电力设计院数字图书馆的设计原则与建设,阐述了数字图书馆是以整合信息资源为原则的知识平台,必将为增强企业员工的创新能力、实现企业的知识管理、提高企业的核心竞争力提供强有力的信息资源保障。 相似文献
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