The subsidies provided in the Emergency Price Control Act of 1942 and in the Defense Production Act of 1950 and their effect upon the production of copper

Thesis (M.B.A.)--Boston Universit

Some aspects of the life and work of Lawrence Sterne

Thesis (M.A.)--Boston University, 1931. This item was digitized by the Internet Archive

Exploring Mars Glass Tube Anomalies

This practical article provides information regarding the use of Edward de Bono CoRT thinking skills to broaden and enhance critical and creative thinking skills in twice exceptional students using the Mars Glass Tube Mystery as a vehicle to explore possibilities and spark creative thinking. The exceptionalities addressed in this lesson plan are gifted learners who have one or more additional exceptionalities of slow processing speed and / or poor fine motor skills. Throughout the lesson, the Mars Mystery photos leveraged both prior knowledge and student curiosity to create an engaging activity for the participants. CoRT thinking skills provided a robust structure for guiding meaningful discussions, a means of encouraging deeper thought, and facilitating productive group discourse. The mystery-focused lesson encouraged imagination, allowing students to not only stretch independent thought but to actively participate in sharing and validating each other’s ideas and to explore creativity as a way to express ideas and generate conclusions

School-Based Data Teams Ask the Darnedest Questions About Statistics: Three Essays in the Epistemology of Statistical Consulting and Teaching

The essays in this thesis attempt to answer the most difficult questions that I have faced as a teacher and consultant for school-based data teams. When we report statistics to our fellow educators, what do we say and what do we leave unsaid? What do averages mean when no student is average? Why do we treat our population of students as infinite when we test for statistical significance? I treat these as important philosophical questions. In the first essay, I use Paul Grice’s philosophical analysis of conversational logic to understand how data teams can accidentally mislead with true statistics, and I use Bernard Williams’s philosophical analysis of truthfulness to understand the value, for data teams, of not misleading with statistics. In short, statistical reports can be misleading when they violate the Gricean maxims of conversation (e.g., “be relevant,” “be orderly”). I argue that, for data teams, adhering to the Gricean maxims is an intrinsic value, alongside Williams’s intrinsic values of Sincerity and Accuracy. I conclude with some recommendations for school-based data teams. In the second essay, I build on Nelson Goodman and Catherine Z. Elgin’s analyses of exemplification to argue that averages (i.e., medians and means) are attenuated, moderate, and sometimes fictive exemplars. As such, medians and means lend themselves to scientific objectivity. In the third essay, I use Goodman’s theory of counterfactuals and Carl Hempel’s theory of explanation to articulate why data teams should make statistical inferences to infinite populations that include possible but not actual students. Data teams are generally concerned that their results are explainable by random chance. Random chance, as an explanation, implies lawlike generalizations, which in turn imply counterfactual claims about possible but not actual subjects. By statistically inferring to an infinite population of students, data teams can evaluate those counterfactual claims in order to assess the plausibility of random chance as an explanation for their findings

Single- and multi-photon excited fluorescence from serotonin complexed with B-cyclodextrin

The fluorescence of serotonin on binding with B-cyclodextrin has been studied using both steady-state and time-resolved methods. Steady state fluorescence intensity of serotonin at 340 nm showed ~ 30% increase in intensity on binding with Ka ~ 60 dm3 mol 1 and the fluorescence lifetimes showed a corresponding increase. In contrast, the characteristic green fluorescence (‘hyperluminescence’) of serotonin observed upon multiphoton near-infrared excitation with sub-picosecond pulses was resolved into two lifetime components assigned to free and bound serotonin. The results are of interest in relation to selective imaging and detection of serotonin using the unusual hyperluminescence emission and in respect to recent determinations of serotonin by capillary electrophoresis in the presence of cyclodextrin. The results also suggest that hyperluminescence occurs from multiphoton excitation of a single isolated serotonin molecule

A Fourier (k-) space design approach for controllable photonic band and localization states in aperiodic lattices

In this paper we present a systematic study of photonic bandgap engineering using aperiodic lattices (ALs). Up to now ALs have tended to be defined by specific formulae (e.g. Fibonacci, Cantor), and theories have neglected other useful ALs along with the vast majority of non-useful (random) ALs. Here, we present a practical and efficient Fourier space-based general theory to identify all those ALs having useful band properties, which are characterized by well-defined Fourier (i.e. lattice momentum) components. Direct control of field localization comes via control of the Parseval strength competition between the different Fourier components characterizing a lattice. Real-space optimization of ALs tends to be computationally demanding. However, via our Fourier space-based simulated annealing inverse optimization algorithm, we efficiently tailor the relative strength of the AL Fourier components for precise control of photonic band and localization properties.Comment: 25 pages, 4 figure