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Spectroscopic Characterization of Atmospheric Aerosol Particle Mimics
No full textThe oxidation state of organic aerosol is correlated with a number of key aerosol properties including the propensity to form clouds and their correlation with increased mortality and morbidity in urban areas. Widespread, cost-effective monitoring of organic aerosol oxidation would be invaluable in estimating climate and health impacts of organic aerosol. Currently, methods are either cost prohibitive or too slow to provide even hourly measurements that are comprehensive across large geographical regions. This work is a first step towards using solvatochromic dyes, which show spectral changes due to changing solvent qualities such as polarity, as indicators of organic aerosol oxidation. UV-visible and fluorescence spectroscopies were used with three different solvatochromic probes in order to quantify shifts in their spectra due to changing chemical environment (i.e. solvent composition). The solvatochromic dyes of interest were Brooker’s Merocyanine, Reichardt’s Dye and Rhodamine B. Additionally, this project begins the development of a field-deployable sensor capable of using solvatochromic dyes in order to indicate properties, such as oxidation state, of an aerosol particle. The development of this sensor will address the current limitations of field instruments, noted above, to characterize aerosol particles
Abraham Lincoln, the United States, and Mexico: The Implications of Memory in a Continental History
No full textThis thesis examines the malleability of memory through an analysis of both domestic and international memories of Abraham Lincoln. With a particular focus on the American Civil War Era in a North American continental context, key individuals are identified and their contributions are illuminated. While Abraham Lincoln is remembered for all that he accomplished during this time, others such as Matías Romero, Ulysses S. Grant, and Plácido Vega, also greatly contributed to the development of the relationship between the United States and Mexico.
Additionally, institutional and collective memories of Abraham Lincoln invoke present-day examples of intentional manipulation of these memories for social and political purposes. This work seeks to understand how and why Lincoln is memorialized in both the United States and Mexico, as opposed to any of the other key figures. This historical context and the memories of Abraham Lincoln complicates the notion of history as truth, and encourages closer examination of monuments and memorials
The Colby Oracle 2020
No full textColby College’s yearbook for the Class of 2020.https://digitalcommons.colby.edu/oracle/1154/thumbnail.jp
Colby College Commencement 2020
No full textColor video with sound. Running time: 32 minutes, 29 seconds.
Colby College graduation ceremony 2020. Faculty procession; Graduates and families after the ceremony.https://digitalcommons.colby.edu/commencement/1007/thumbnail.jp
Designing a future: Silicon Valley-born Brit Biddle \u2719 melds tech and art of Mayflower Hill
Get PDFThis education has taught me how to look at a problem and really think about it. And i\u27ve been able to balance that out with art. -Brit Biddle \u271
The Residential Location Choices of Chabad Households: An analysis of decision making with non-price constraints
No full textWhere an individual chooses to live informs many of their economic decisions and may be the single largest economic decision one makes in their lives. Through understanding the way that people choose their residential locations, we are able to better understand the opportunities available to them. Within the Chabad community, there is a large focus on emissary work, which calls Chabad Jews to move outside of large Jewish communities in order to help secular Jews become more religious. There are also certain religious amenities that are necessary to live a Chabad life, such as a local synagogue. So the question remains as to how households will prioritize various non-pricing constraints to inform their residential location decisions. The non-pricing constraints that are considered are Jewish amenities, gaining social utility through interactions with other Chabad people, and fulfilling the emissary work that is crucial to the Chabad identity. This research utilizes a theoretical framework based on a Constant Elasticity of Substitution Utility to model the preferences that families will reflect through their residential location choices. The model analyzes both single and intertemporal utility. To better inform the model, qualitative data was collected through interviews with members of three distinct Chabad communities: Crown Heights, New York City; Vegas, Nevada; and Portland, Maine. My results indicate that the majority of Chabad Jews show a preference for living near Jewish amenities rather than doing emissary work and that the Chabad population makes residential location decisions closer to that of other Hasidic populations in the New York region, a radical assertion given their unique focus on emissary work. There has been little research done on the Chabad community and even less that has been done utilizing economic frameworks. Therefore, my research adds to the literature by expanding the possibility of increasing research around this subject matter