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The existing multimedia classroom vision environment is researched in this paper with the study, the analysis and the research, and the question with the multimedia classroom vision environment is proposed by present situation investigation. By the human work efficiency study, the principle and the method with the visual environment, the multimedia classroom existences not the analogy energy region to illuminance questions to different demand are solved creativity by this paper. The visual environments with pleasant and highly effective are realized in this paper.

There could be considerable benefits in designing supply chains structures taking into account the design of the product and the design of the manufacturing processes. The revised structures involve delaying product differentiation until later production stages. We develop models representing possible implementations of the delayed product differentiation structures and compare their performance in total supply chain costs involving the cost of expected customer waiting times. Some numerical experiments were designed to investigate how different factors affect the performance of structures. We also offer guidance to managers using reasonable structure for a balance between customization and responsiveness.