Earth observing instruments, such as those embarked on the Earth Radiation Budget Experiment (ERBE) and Clouds and the Earth's Radiant Energy System (CERES), have been used to monitor the arriving solar and the upwelling solar reflected and longwave emitted radiation from low Earth orbit for the past three decades. These instruments have played a crucial role in studying the Earth's radiation budget and developing a decadal climate data record. Prior to launch, these instruments go through several robust design phases followed by rigorous ground calibration campaigns to establish their baseline characterization spectrally, spatially, temporally, and radiometrically. The knowledge gained from building and calibrating these instruments has aided in technology advancements as the need for developing more accurate instruments has increased. In order to understand the prelaunch performance of these instruments, NASA's Langley Research Center (LaRC) has partnered with the Thermal Radiation Group at Virginia Tech to develop first-principle, dynamic electrothermal, numerical models of scanning radiometers that can be used to enhance the understanding of such instruments. The body of research presented here documents the construction of these models by highlighting their development and results and possible applications to the next generation of Earth radiation budget instrument. Much of the effort reported here is based on the author's contribution to NASA's now-deselected Radiation Budget Instrument (RBI) project. / Doctor of Philosophy / Earth Radiation Budget (ERB) sensors, such as the Earth Radiation Budget Experiment (ERBE) and the Clouds and the Earth's Radiant Energy System (CERES) have been a crucial part of studying the Earth's radiation budget for the past three decades. The Earth's radiation budget is the natural balance that exists between the energy received from the Sun and the energy radiated back into space. These instruments, which measure the radiative energy arriving and leaving at the top of the Earth's atmosphere, enhance understanding of the roles played by clouds and aerosols in reflecting and absorbing energy, thereby cooling or heating the planet. In order to enable the design for the next-generation Earth radiation budget sensors, NASA Langley has partnered with the Thermal Radiation Group at Virginia Tech to develop a capability for high-fidelity computer modeling that permits the complete characterization of an Earth radiation budget instrument. The resulting simulation consists of computer models for optical components, calibration targets, detecting elements and a source that includes information on anisotropy of a given Earth scene-type (clear vs. cloudy scene, ocean, desert, etc.). The modeling tool permits simulation of the entire science data stream as photons entering the instrument are converted to digital counts leaving the instrument, and provides the flexibility to observe various scene-types whether they be calibration targets or Earth scenes. This dissertation highlights the construction of this modeling tool and its capabilities as it is applied to NASA's now-deselected Radiation Budget Instrument.

This study focussed on the budget control and monitoring challenges for school governing bodies. The study engaged a qualitative in-depth research into the challenges school governing bodies experience regarding budget control and monitoring based on the fact that budget control and monitoring are dimensional tools of financial management aimed at ensuring proper financial management and accountability. The research, grounded on social constructivism and employing a phenomenological pragmatic approach for data collection was purposely and conveniently confined to town schools in the Ekurhuleni District. Data was collected using interviews with school principals, finance officers and a treasurer and Institutional Development and Support Officers. Findings from the data indicated that while there were areas where school governing bodies did well, they faced numerous challenges in budget control and monitoring. It was found that there were challenges regarding the budgeting process in so far as budget preparation, budget implementation, and budget control and monitoring. Miscellaneous challenges influencing the budget control and monitoring process found included poor financial reporting, the low level of parental literacy which seemed to influence the meaningfulness of and realistic nature of the budgeting processes and the generic, inadequate and poor training school governors were provided with. Recommendation from the study mainly concern the provision of customised, focussed and needs-based training in financial and budget management after determining the skills audit to determine training and capacity building needs of school governors, holding principal to account for financial management as ex officio members of governing bodies, reviewing the quintile classification of schools based on the poverty index and considering the backgrounds of learners at town schools, who mostly are from previously disadvantaged backgrounds and ensuring that schools report on finances in languages parents understand and linking budgeting process to schools’ educational goals. / MEd (Education Management), North-West University, Vaal Triangle Campus, 2014

This study focussed on the budget control and monitoring challenges for school governing bodies. The study engaged a qualitative in-depth research into the challenges school governing bodies experience regarding budget control and monitoring based on the fact that budget control and monitoring are dimensional tools of financial management aimed at ensuring proper financial management and accountability. The research, grounded on social constructivism and employing a phenomenological pragmatic approach for data collection was purposely and conveniently confined to town schools in the Ekurhuleni District. Data was collected using interviews with school principals, finance officers and a treasurer and Institutional Development and Support Officers. Findings from the data indicated that while there were areas where school governing bodies did well, they faced numerous challenges in budget control and monitoring. It was found that there were challenges regarding the budgeting process in so far as budget preparation, budget implementation, and budget control and monitoring. Miscellaneous challenges influencing the budget control and monitoring process found included poor financial reporting, the low level of parental literacy which seemed to influence the meaningfulness of and realistic nature of the budgeting processes and the generic, inadequate and poor training school governors were provided with. Recommendation from the study mainly concern the provision of customised, focussed and needs-based training in financial and budget management after determining the skills audit to determine training and capacity building needs of school governors, holding principal to account for financial management as ex officio members of governing bodies, reviewing the quintile classification of schools based on the poverty index and considering the backgrounds of learners at town schools, who mostly are from previously disadvantaged backgrounds and ensuring that schools report on finances in languages parents understand and linking budgeting process to schools’ educational goals. / MEd (Education Management), North-West University, Vaal Triangle Campus, 2014