Solar energy, its conversion and utilization

The work being carried out at the University of Florida Solar Energy and Energy Conversion Laboratory in converting solar energy, our only income, into other needed and useful forms of energy is described. A treatment such as this demonstrates, in proper perspective, how solar energy can benefit mankind with its many problems of shortages and pollution. Descriptions were given of the conversion processes, equipment, and performance. The testing of materials, solar water heating, space heating, cooking and baking, solar distillation, refrigeration and air-conditioning, work with the solar furnace, conversion to mechanical power, hot air engines, solar-heated sewage digestion, conversion to electricity, and other devices will be discussed

Man-computer role in space navigation and guidance Final report

Man computer roles and hardware requirements for navigation and guidance in deep space manned mission

Presidential Promises and the Uniting American Families Act: Bringing Same-Sex Immigration Rights to the United States

Binational same-sex couples in the United States all too often face a difficult reality. Due to discriminatory immigration laws, which prevent United States citizens from sponsoring their same-sex partners for permanent residence, same-sex couples must choose between deportation and separating their families. The Uniting American Families Act, however, offers a remedy to this unacceptable inequality. Yet the Act currently does not have the congressional support it needs to pass. This Note argues that President Obama, as the country’s Executive, should use his “bully pulpit” to inspire the Act’s passage. Specifically, this Note examines the manifestation and extent of Executive power in relation to immigration, the timeliness of the issue, and the recent broadening of Executive power to support a conclusion that Mr. Obama should take such action

Prediction of explosive yield and other characteristics of liquid propellant rocket explosions Final report

Explosive hazards and yield predictions for liquid rocket propellant

Lyapunov 1-forms for flows

In this paper we find conditions which guarantee that a given flow $\Phi$ on a compact metric space $X$ admits a Lyapunov one-form $\omega$ lying in a prescribed \v{C}ech cohomology class $\xi\in \check H^1(X;\R)$. These conditions are formulated in terms of the restriction of $\xi$ to the chain recurrent set of $\Phi$. The result of the paper may be viewed as a generalization of a well-known theorem of C. Conley about the existence of Lyapunov functions.Comment: 27 pages, 3 figures. This revised version incorporates a few minor improvement

Evidence for a Bulk Complex Order-Parameter in Y0.9Ca0.1Ba2Cu3O7-delta Thin Films

We have measured the penetration depth of overdoped Y0.9Ca0.1Ba2Cu3O7-delta (Ca-YBCO) thin films using two different methods. The change of the penetration depth as a function of temperature has been measured using the parallel plate resonator (PPR), while its absolute value was obtained from a quasi-optical transmission measurements. Both sets of measurements are compatible with an order parameter of the form: Delta*dx2-y2+i*delta*dxy, with Delta=14.5 +- 1.5 meV and delta=1.8 meV, indicating a finite gap at low temperature. Below 15 K the drop of the scattering rate of uncondensed carriers becomes steeper in contrast to a flattening observed for optimally doped YBCO films. This decrease supports our results on the penetration depth temperature dependence. The findings are in agreement with tunneling measurements on similar Ca-YBCO thin films.Comment: 11 pages, 4 figure

Man-computer roles in space navigation and guidance, phase I

Estimated man-machine requirement computations for space navigation and guidanc