Stability of the inverse resonance problem for Jacobi operators

When the coefficients of a Jacobi operator are finitely supported perturbations of the 1 and 0 sequences, respectively, the left reflection coefficient is a rational function whose poles inside, respectively outside, the unit disk correspond to eigenvalues and resonances. By including the zeros of the reflection coefficient, we have a set of data that determines the Jacobi coefficients up to a translation as long as there is at most one half-bound state. We prove that the coefficients of two Jacobi operators are pointwise close assuming that the zeros and poles of their left reflection coefficients are \eps-close in some disk centered at the origin

Family reunification ideals and the practice of transnational reproductive life among Africans in Europe

-family, migration

The demography of family reunification: from circulation to substitution in Gambian Spain

-Gambia, The, Spain, family demography, family reunification, migration, migration policy

Characterization of Pinus ectomycorrhizas from mixed conifer and pygmy forests using morphotyping and molecular methods

Published versio

Aaron E. Bledsoe - The Man Behind the Mask: The Progression of Masculinity in African American Male Characters as seen in films Awarded the NAACP Image Award for Outstanding Actor in a Motion Pictur

This qualitative study will examine the way in which the masculinity of African American men is portrayed in films through a textual analysis of the leading male character in movies that have been awarded the NAACP Image Award for Outstanding Actor in a Motion Picture. I’ll be performing a textual analysis of the following movies: “Flight”, “Book of Eli”, and “The Great Debaters”. Through the analysis of the main character, I discuss the following: types of marginalization experienced in the film, interactions/relations with (African American) women, as well as the importance that his education and/or occupation will play in his identity as a man. Using these factors, I argue that these characters are able to preserve their masculinity as a means of escaping the emasculation created in a society that marginalizes men of color in film. Donald Bogle points out that in the past, Black men have been portrayed as either “childlike, docile or happy as the role of a servant,”, or as an extremely violent threat to society. Using the studies of Stuart Hall, I’ll be able examine the extent to which representation affects the portrayal of a cultural group and how organizations like the NAACP Image Awards help in providing more of a positive acknowledgement of people of color in the media.https://epublications.marquette.edu/mcnair_2013/1009/thumbnail.jp

International housing partnership exchange

Housing

Variable plant spacing

The goal of this project was to develop a system for varying the spacings between soybean plants as they grow to maximize the number of plants grown in a given volume. The project was studied to aid in the development of NASA's Controlled Ecological Life Support System (CELSS). The resulting design consists of plant trays which are three dimensional trapezoids arranged into circles in a compact geometrical configuration. These circles are stacked together in back to back pairs to form a long cylinder. In each growth tray, plants will be housed in individual containers containing a nutrient delivery system and a plant support mechanism. Between the containers, a half trellis has been designed to space the plants for maximum space efficiency. The design allows for localized seeding and harvesting mechanisms due to the chambers' geometrical configuration. In addition, the components have been designed for ease of cleaning and minimal maintenance. Next semester, the individual components will be constructed and tested to determine the success of the design

Non-destructive plant health sensing using absorption spectroscopy

The sensor group of the 1988 EGM 4001 class, working on NASA's Controlled Ecological Life Support Systems (CELSS) project, investigated many different plant health indicators and the technologies used to test them. The project selected by the group was to measure chlorophyll levels using absorption spectroscopy. The spectrometer measures the amount of chlorophyll in a leaf by measuring the intensity of light of a specific wavelength that is passed through a leaf. The three wavelengths of light being used corresponded to the near-IR absorption peaks of chlorophyll a, chlorophyll b, and chlorophyll-free structures. Experimentation showed that the sensor is indeed measuring levels of chlorophyll a and b and their changes before the human eye can see any changes. The detector clamp causes little damage to the leaf and will give fairly accurate readings on similar locations on a leaf, freeing the clamp from having to remain on the same spot of a leaf for all measurements. External light affects the readings only slightly so that measurements may be taken in light or dark environments. Future designs and experimentation will concentrate on reducing the size of the sensor and adapting it to a wider range of plants