The major purpose of this study was to investigate the existing noise conditions within industrial education woodworking and metalworking laboratories to determine whether these noise conditions were a problem as seen by the instructors and if in fact these noise conditions exceeded the standards set by the Occupational Safety and Health Act (OSHA). The study was conducted in three phases: (1) the assessment of the opinions of professional industrial educators towards noise as a pollutant; (2) an electronic instrument measurement of the actual noise exposure conditions that existed in a sampling of laboratories; and (3) the comparison between the opinions of the professional educators and the actual laboratory noise conditions. The study incorporated the responses from every identifiable high school woods and metals instructor throughout Utah. Comparisons between groups were made concerning the opinions of the professional educators. towards noise as a pollutant, their knowledge about OSHA, and their identification of the noisiest pieces of equipment. The second phase of the study entailed the electronic instrument measurement of the actual environmental noise levels within 30 randomly selected laboratories. The use of a sound level dosimeter and a hand held sound level meter were employed. The data obtained from the study disclosed that the two groups were not in agreement on their knowledge about OSHA. The electronic instrument measurements revealed that 8 of the 18 woodworking instructors and 5 of the 12 metals instructors visited were subjected to noise exposures that were in violation to OSHA. The loudest pieces of equipment were the surface planer, radial arm saw, table saw, foundry furnace, pedestal grinder and portable disc grinder. The third phase of the study used a statistical analysis to compare the opinions of the instructors to the actual measured noise conditions. The chi-square test for significance at the . 05 level of confidence was used to reject the null hypothesis. The major conclusions reached as a result of the analysis of data include: (1) a potential safety and health hazard exists from noise pollution within the industrial education facilities; (2) many members of the profession are not fully informed about OSHA; (3) most labs are in compliance to OSHA noise standards, however, many do exceed the maximum a llowable limits; (4) under stringent OSHA compliance, certain curriculum alterations would have to be initiated; (5) there is no apparent connection between those laboratoryies which were in volation to OSIIA noise standards and the composition of size and construction materials; (6) the opinions of the teachers from the field do not necessarily reflect the actual measured conditions of the environmental noise exposures; and (7) the din of noise produced around machinery must not be considered a problem relevant only to industry.

Culverts are rehabilitated using a variety of techniques; the approach studied in this report focuses on the use of slip liners. Slip lining refers to installing a liner pipe inside a host pipe to extend its useful life. Slip lining reduces the diameter of the culvert; however, when a smooth-walled liner [e.g., high-density polyethylene (HDPE)] is installed in a profiled-wall pipe (e.g., corrugated metal pipe), the reduction in hydraulic roughness helps to compensate for the reduction in flow area, minimizing any reduction in discharge capacity. In some cases, the discharge capacity may increase. A smaller diameter liner, made of smoother material, will likely produce larger pipe flow velocities relative to the host culvert. High velocities can potentially create a barrier for fish passage, discouraging their use in areas sensitive to fish passage. The objective of this research was to find ways to implement slip liners and still accommodate fish passage. A 60-ft long, 2-ft diameter, baffled slip liner was tested at seven slopes (0-3.5%) and at three flow rates per slope (1-4.6 cfs). For comparison purposes, tests were also conducted on a smooth-walled (non-baffled) liner. Baffles were found to greatly increase the potential for low-flow fish passage, allowing passage up to slopes of 3.5%. Conversely, the smooth-walled liner prohibited passage beyond a 1.0% slope. The potential drawback to using baffles in a slip-lined culvert is the reduction in culvert flow capacity. Compared to the smooth-walled liner, the baffled culvert reduced the flow capacity of the culvert by about 74% at pressurized, full pipe flow. Finally, velocity was measured with an acoustic Doppler velocimeter (ADV) in the baffled culvert and turbulence values were calculated using four different methods. The Energy Dissipation Factor, or EDF, values had a close relationship with percent fish passing and if more testing is done, it could be used as a scaling factor to transfer fish passage data to other sized culverts. The results of this study, suggest that baffled slip-lined culverts can aid fish passage and are useful for culvert rehabilitation as long as the culvert can still maintain appropriate flow capacity.

A child development laboratory in a university finds its first justification in its ability to contribute to the education of college students. After this justification has been established, the laboratory has a responsibility for serving the children enrolled in it.

Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1994. / Cover title. / Includes bibliographical references (p. 219-227). / Supported by the Advanced Research Projects Agency of the Dept. of Defense under Office of Naval Research contracts. N00014-91-J-4038 N00014-85-K-0124 Supported by the California Institute of Technology Jet Propulsion Laboratory. 959333 Supported in part by Matsushita Research. / Lynne E. Parker. / Ph.D.

Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1990. / Cover title. / Includes bibliographical references (p. 104-110). / Supported by the Office of Naval Research, University Initiative Program. N00014-86-K-0685 / Michael Dean Levin. / M.S.

Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1991. / Includes bibliographical references. / Raymond Chi Hing Chiu. / Ph.D.

Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1990. / Includes bibliographical references (p. 129-130). / Sponsored by NASA. NAGW-21 / Terrence W. Fong. / M.S.

Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1985. / "October 1985." / Includes bibliographical references (p. 167-169). / Research sponsored by the Air Force Office of Scientific Research. F49620-78-C-0084 / by Michael B. Giles. / Ph.D.

Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1986. / Includes bibliographical references (p. 105-106). / Research supported by the Joint Directors of Laboratories through the Office of Naval Research. N00014-85-K-0782 / Philippe J. F. Martin. / M.S.

Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1986. / Includes bibliographical references (p. 78-79). / Research supported by the National Science Foundation. SES84-19885 / by Anne-Claire Alice Louvet. / B.S.