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- Title
- School board decision making practices
- Creator
- Beard, Nicole R.
- Date
- 2017
- Collection
- Electronic Theses & Dissertations
- Description
-
ABSTRACTSCHOOL BOARD DECISION MAKING PRACTICESByNicole R. BeardThe purpose of this study was to examine the way in which school boards use data when making decisions, specifically their orientations, perceptions, concerns and priorities around data. This study sought to understand how school boards use data when setting or tracking progress toward goals and aimed following the process of board use of data to discern how they create knowledge upon which to base their decisions and direct...
Show moreABSTRACTSCHOOL BOARD DECISION MAKING PRACTICESByNicole R. BeardThe purpose of this study was to examine the way in which school boards use data when making decisions, specifically their orientations, perceptions, concerns and priorities around data. This study sought to understand how school boards use data when setting or tracking progress toward goals and aimed following the process of board use of data to discern how they create knowledge upon which to base their decisions and direct subsequent action. Three school boards were selected based on specific criteria that were found beneficial to the study’s purpose and goal. Participants were sent an online survey to complete, as well as observed during board meeting and committee meetings. In addition, each superintendent and two school board members from each district participated in face to face interviews regarding their views on the role of data when making decisions. The results of this research study brought into focus how organizations such as these learn about data and put this knowledge into action in the form of decision making. As school board members examine data, they take part in an information sharing cycle that transforms the data into contextually relevant information that in turn becomes knowledge. This knowledge can be acted upon and enables school boards to validate their reasons for the decisions made as a collective body. Learning about this cycle can be helpful in helping community members and other stakeholders better understand the level of analysis that takes place when board members make decisions.
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- Title
- Measurement of isobaric analogue resonances of 20742077Ar with the active-target time projection chamber
- Creator
- Bradt, Joshua William
- Date
- 2017
- Collection
- Electronic Theses & Dissertations
- Description
-
While the nuclear shell model accurately describes the structure of nuclei near stability, the structure of unstable, neutron-rich nuclei is still an area of active research. One region of interest is the set of nuclei near N=28. The shell model suggests that these nuclei should be approximately spherical due to the shell gap predicted by their magic number of neutrons; however, experiments have shown that the nuclei in this region rapidly become deformed as protons are removed from the...
Show moreWhile the nuclear shell model accurately describes the structure of nuclei near stability, the structure of unstable, neutron-rich nuclei is still an area of active research. One region of interest is the set of nuclei near N=28. The shell model suggests that these nuclei should be approximately spherical due to the shell gap predicted by their magic number of neutrons; however, experiments have shown that the nuclei in this region rapidly become deformed as protons are removed from the spherical 48Ca. This makes 46Ar a particularly interesting system as it lies in a transition region between 48Ca and lighter isotones that are known to be deformed.An experiment was performed at the National Superconducting Cyclotron Laboratory (NSCL) to measure resonant proton scattering on 46Ar. The resonances observed in this reaction correspond to unbound levels in the 47K intermediate state nucleus which are isobaric analogues of states in the 47Ar nucleus. By measuring the spectroscopic factors of these states in 47Ar, we gain information about the single-particle structure of this system, which is directly related to the size of the N=28 shell gap. Four resonances were observed: one corresponding to the ground state in 47Ar, one corresponding its first excited 1/2- state, and two corresponding to 1/2+ states in either 47Ar or the intermediate state nucleus. However, only a limited amount of information about these states could be recovered due to the low experimental statistics and limited angular resolution caused by pileup rejection and the inability to accurately reconstruct the beam particle track.In addition to the nuclear physics motivations, this experiment served as the radioactive beam commissioning for the Active-Target Time Projection Chamber (AT-TPC). The AT-TPC is a new gas-filled charged particle detector built at the NSCL to measure low-energy radioactive beams from the ReA3 facility. Since the gas inside the detector serves as both the tracking medium and the scattering target, reactions are measured over a continuous range of energies with near-4π solid angle coverage. This experiment demonstrated that tracks recorded by the AT-TPC can be reconstructed to a good resolution, and it established the feasibility of performing similar experiments with this detector in the future.
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