Teaching time concepts and time relationships in seventh grade social studies.

Thesis (Ed.M.)--Boston Universit

Of mind over...matter

The distinct division of clinical symptoms into what is somatic and what is psychological in human sciences, has its roots in Cartesian thinking which may have been given a lopsided emphasis. This essay argues against this strict division, using examples and data mainly referring to gastrointestinal functional somatic syndromes (psycho-somatic disorders). The effects of context and also of psychotropic agents on this interaction between psyche and soma is discussed.peer-reviewe

The right wing of the LEFT airplane

The NASA Leading-Edge Flight Test (LEFT) program addressed the environmental issues which were potential problems in the application of Laminar Flow Control (LFC) to transport aircraft. These included contamination of the LFC surface due to dirt, rain, insect remains, snow, and ice, in the critical leading-edge region. Douglas Aircraft Company designed and built a test article which was mounted on the right wing of the C-140 JetStar aircraft. The test article featured a retractable leading-edge high-lift shield for contamination protection and suction through perforations on the upper surface for LFC. Following a period of developmental flight testing, the aircraft entered simulated airline service, which included exposure to airborne insects, heavy rain, snow, and icing conditions both in the air and on the ground. During the roughly 3 years of flight testing, the test article has consistently demonstrated laminar flow in cruising flight. The experience with the LEFT experiment was summarized with emphasis on significant test findings. The following items were discussed: test article design and features; suction distribution; instrumentation and transition point reckoning; problems and fixes; system performance and maintenance requirements