Aerodynamic Characteristics of a Two-blade NACA 10-(3)(062)-045 Propeller and of a Two-blade NACA 10-(3)(08)-045 Propeller

Characteristics are given for the two-blade NACA 10-(3)(062)-045 propeller and for the two-blade NACA 10-(3)(08)-045 propeller over a range of advance ratio from 0.5 to 3.8, through a blade-angle range from 20 degrees to 55 degrees measured at the 0.75 radius. Maximum efficiencies of the order of 91.5 to 92 percent were obtained for the propellers. The propeller with the thinner airfoil sections over the outboard portion of the blades, the NACA 10-(3)(062)-045 propeller, had lower losses at high tip speeds, the difference amounting to about 5 percent at a helical tip Mach number of 1.10

Rope: An Original Piece for String Orchestra Played Concurrently with Alfred Hitchcock\u27s Film

This thesis presents an original piece of music designed to be performed concurrently with Alfred Hitchcock’s Rope (1948). The film provides a canvas upon which a musically dominant multimedia experience is built. An accompanying analysis explains the variety of compositional techniques used, explaining their significance and how each deviates from a traditional film score. The objective of this work is to challenge the existing relationship between music and film, and add to the growing body of repertoire of live works featuring synchronized video, modeling example methods of live multimedia performance. In this exploration, the goal was not to be anti-cinematic, but to be extra-cinematic; that is, to go beyond the traditional practices while still employing them when desired

Rational use of azithromycin in the control of trachoma : using quantitative PCR to assess distribution of infection and impact of treatment

Trachoma is a chronic keratoconjunctivits caused by ocular infection with Chlamdydia trachomatis (CT). It is a major cause of blindness. This thesis addresses issues important for the rational use of the antibiotic azithromycin, one of the cornerstones of WHO's strategy for trachoma elimination. An entire sub-village in Rombo District, Tanzania was invited to participate. Consenting individuals were examined and had swabs taken for quantitative PCR (directed against the single-copy CT gene ompl), at baseline (before treatment). and two, six, twelve and eighteen months after, mass distribution of single-dose azithromycin. At the time of drug distribution, both weight and height of each treated individual was recorded. Four findings are highlighted. (1) Before treatment, and at each post-treatment time point, children below the age of ten years harboured the bulk of the community's ocular CT. Control programmes should view this age group as their principal target in antibiotic distribution campaigns. (2) Signs of active trachoma were much less useful than age thresholds for predicting population subsets with heavy infections. (3) Based on a summary statistic referred to as the community ocular CT load, or COCTL, the overall community burden of organism fell dramatically following azithromycin distribution, and stayed low for the entire eighteen months of follow-up. The COCTL was 13% of its baseline level at two months. 8% of baseline at six months, and 4% at both twelve and eighteen months. This may have been due to the high treatment coverage (98%) achieved. (4) In the population studied, height was a good proxy for weight for determining azithromycin dose. These studies contribute new information about the epidemiology of ocular CT infection, provide dramatic evidence of the potential effect of azithromycin when uptake is high, and should help to streamline azithromycin distribution efforts by simplifying determination of dose in the field