NASA's high efficiency and radiation damage solar cell program

The conversion efficiency and the life expectancy of solar cells and arrays were evaluated for space applications. Efforts were made to improve the understanding of the conversion of electromagnetic radiation to useful forms of energy. A broad range of advanced concepts were evaluated

An analytical basis for assaying buried biological contamination Interim report

Assay techniques for determining biological contamination of spacecraft material

Enterprising Rural Families: Making It Work

Enterprising Rural Families (ERFTM) is an international course for the rural family in business. ERFTM teaches a process of finding success, resilience and satisfaction for rural families engaged in enterprises; including agriculture. Instructors from the United States, Canada and Australia have teamed together to offer this course that focuses on the three main components of a family business: individuals, the family unit and the business enterprise. This course also allows families in business to increase their awareness of cultural differences and similarities and improve their understanding of global issues. The course consists of written presentations, online chat sessions, threaded discussions, readings, videos, case studies and individual projects. Using these mechanisms, the online interaction provides rural families with both the tools and skills to resolve immediate family business issues and build a profitable business for the future.Consumer/Household Economics, Farm Management,

LABOR MANAGEMENT IN AGRICULTURE: A CRITICAL MANAGEMENT FUNCTION

Labor and Human Capital,

Quantum Hall effect on centimeter scale chemical vapor deposited graphene films

We report observations of well developed half integer quantum Hall effect (QHE) on mono layer graphene films of 7 mm \times 7 mm in size. The graphene films are grown by chemical vapor deposition (CVD) on copper, then transferred to SiO_{2} /Si substrates, with typical carrier mobilities \approx 4000 cm^{2} /Vs. The large size graphene with excellent quality and electronic homogeneity demonstrated in this work is promising for graphene-based quantum Hall resistance standards, and can also facilitate a wide range of experiments on quantum Hall physics of graphene and practical applications exploiting the exceptional properties of graphene

Using Adaptive Mesh Refinement to Study Grid Resolution Effects for Shock-Boundary Layer Interactions

Adaptive Mesh Refinement (AMR) promises a much more computationally efficient means to obtain a discrete approximation to a continuous boundary value problem of a specified accuracy than classic isotropic grid refinement. The AMR capability of OVERFLOW (a computational fluid dynamics (CFD) code) is utilized to provide estimates of the exact analytical solutions to problems of interest to turbulence modeling. Predictions of surface pressure and skin friction, essentially the state of stress at the surface, shows little difference with grids believed to be "grid resolved." Velocity profiles, on the other hand, show marked differences in flows with shocks. The AMR method, as implemented in OVERFLOW 2.2k, appears to provide the ability to produce arbitrarily accurate solutions at a predictable cost much smaller than classic uniform mesh refinement

Protecting and Expanding the Richness and Diversity of Life, An Ethic for Astrobiology Research and Space Exploration

The ongoing search for life on other worlds and the prospects of eventual human exploration of the Moon and Mars indicate the need for new ethical guidelines to direct our actions as we search and how we respond if we discover microbial life on other worlds. Here we review how life on other worlds presents a novel question in environmental ethics. We propose a principle of protecting and expanding the richness and diversity of life as the basis of an ethic for astrobiology research and space exploration. There are immediate implications for the operational policies governing how we conduct the search for life on Mars and how we plan for human exploration throughout the Solar System

Risk Management for Ag Families: An Extension Model for Improving Family Business Success

A risky business environment for agricultural producers coupled with human risk elements unique to family businesses, points to the need for extension programs that integrate traditional risk management concepts into curriculums focused on the potentially unique educational needs of family farm management teams. Results in this paper indicate that a multi-state, grant funded program entitled "Risk Management for Ag Families" had impact and provides a model that traditional risk management education programs could benefit from.Risk and Uncertainty, Teaching/Communication/Extension/Profession,