This report discusses biological rhythms: what they are, how they are controlled by the brain, and the role they play in regulating physiological and cognitive functions. The major focus of the report is the examination of the effects of nonstandard work hours on biological rhythms and how these effects can interact with other factors to affect the health, performance, and safety of workers.

This report, the final product of OTA’s assessment on international collaboration in defense technology, explores the form and dynamics of the international defense industry, the intricacies of technology transfer and equipment sales, and the implications for U.S. policy.

This OTA Background Paper presents the results of a survey of 1,500 U.S. companies, the 50 largest utilities, and the largest unions. The survey was designed to obtain information about the types of medical monitoring and screening done in the United States and the extent of their use. OTA finds that virtually all large U.S. employers use some of these tests.

This background paper discusses the legacy of 40 years of U.S. university/AID collaboration, and examines new opportunities for U.S. university participation in development assistance.

Common issues for these systems include their possible contributions to improving mobility in congested corridors, U.S. technology leadership, the Federal role in transportation research and development, and institutional and community barriers to major, new infrastructure programs. Moreover, some Federal financing is likely to be required if commercial maglev or tiltrotor technologies are to be developed by U.S. industry over the next decade. Congress will need to clarify its objectives for supporting or encouraging these technologies before it can make wise decisions on when or whether to undertake substantial, long-term Federal programs in support of either or both of them. This report identifies several funding and management options for consideration if such goals are established.