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Various ways are examined to obtain reduced order mathematical models of structures for use in dynamic response analyses and in controller design studies. Attachment modes are deflection shapes of a structure subjected to specified unit load distributions. Attachment modes are frequently employed to supplement free-interface normal modes to improve the modeling of components (structures) employed in component mode synthesis analyses. Deflection shapes of structures subjected to generalized loads of some specified distribution and of unit magnitude can also be considered to be attachment modes. Several papers which were written under this contract are summarized herein.

Frank H. Craig (1859-1945) was superintendent of Wethersfield (Ill.) schools from 1903 to 1918. He later moved in Vermont and wrote prose and poetry about the rural communities in which he lived. These poems reflect the author's love for nature and the people and memories that brought meaning to his life. The reader wishes to thank the <a href="https://kewanee-history.com/" target="_blank" rel="noopener noreferrer">Kewanee Historical Society</a> for providing her access to this book. (Summary by MaryAnn)