Part I. The design and development of organic second-order nonlinear optical (NLO) materials have attracted much interest due to their applications in optoelectronic devices and modern communications technology. Donor-pi-acceptor compounds, D-(CH=CH)[subscript n]-A, often exhibit hyperpolarizability that results in laser frequency doubling (second…

Improving college completion is a shared objective of higher education. It is the focus of colleges, foundations, state governments, and the White House. Students have gotten the message--their aspirations are on the rise. But the nation's collective ambition far exceeds today's outcomes. Many students are not attaining their goals. College…

One of the greatest challenges that community colleges face in their efforts to increase graduation rates is improving the success of students in their developmental, or remedial, education programs--the courses that students without adequate academic preparation must take before they can enroll in courses for college credit. Emphasizing results…