Technique for increasing yield of trifluoroni-trosomethane-tetrafluoro- ethylene copolymer

Polymerization technique using equimolar amounts of trifluoronitrosomethane and tetrafluoroethylene to increase yield of copolymer is described. Yields were increased by ninety percent and final product displayed better physical properties. Test equipment and chemical reactions for process are described

Assessing to Achieve High Performance: What Nonprofits are Doing and How Foundations Can Help

For foundation leaders to most effectively support grantees, more needs to be understood about the extent to which nonprofits are assessing performance, how they are approaching this work, and what they are looking for from their funders to support it.To better understand the state of practice of performance assessment at nonprofits, The Center For Effective Philanthropy (CEP) turned to its national panel of nonprofit leaders with questions about their assessment strategies and how they are supported. For nonprofits, measuring and improving performance is a challenging endeavor. Yet, the data from these surveys reveal that nonprofits are assessing performance -- but lack the resources they need to do all they seek to do.The report shows that most nonprofits receiving funding from large foundations collect and use information about their performance, yet many want to gather additional -- or better -- data. The typical nonprofit in the study allocates just two percent or less of its budget to assessing its performance, and few employ staff who are dedicated to this work full time. In approaching this work, only a minority of nonprofits in the study report receiving support from foundations for their performance assessment efforts

Development of conformal coating materials

New polymeric compositions appear useful as coatings on electronic circuitry operating in rigorous environments. Formulation of their compositions is based on nitrosofluorocarbon polymers having active cure sites

Improvements in ERBS attitude determination without gyros

Previous papers have described the modification of the Earth Radiation Budget Satellite (ERBS) Attitude Determination System (ADS) to overcome the impact of on board gyro degradation and failure on attitude ground support of the mission. Two approaches were taken: implementing a Kalman filter in place of the batch-least-squares attitude estimator to account for the propagation error produced by high-noise gyro data, and modeling the ERBS attitude dynamics to restore rate information in the case of gyro failure. Both of these methods had shortcomings. In practice, the filter attitude diverged without complete sensor observability, and accurate dynamics modeling required knowledge of disturbance torque parameters that had to be determined manually. These difficulties have been overcome by improved tuning of the filter and by incorporating dynamics parameter estimation into the ERBS ADS

17th International Meeting of University Theatres (RITU)

17th International Meeting of University Theatres (RITU