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While he did not emphasize fully the nature of those changes , the results are nothing less than spectacular as evidenced by this year 's teaching evaluations . The 317 lots offer four different housing types and are laid out not only to preserve land , but also to emphasize views : " village " homes surround a traditional market square and green ; " prairie " homes are clustered in groups of eight , recalling rural farmsteads ; " meadow " homes have views of a landscaped commons and prairie ; and " field " homes overlook the farm . Educational campaigns should emphasize that the benefits of improved sleep may be difficult to notice in terms of their own attitude / outlook or general level of tiredness in a daily or even weekly time frame . In addition , we will use recent case studies and research to emphasize the issues and techniques important in carrying out ecological research .