Analytical Variables Leading to the Involvement of Consumers and Farmers in Sustainable Urban Agriculture in the Indianapolis Region

200,000 people living in Indianapolis have low food access, most of whom live in low-income areas. One solution to these food deserts is sustainable urban agriculture. I investigated what factors bring people living in the Indianapolis region to become involved in sustainable agriculture in the hopes of increasing future involvement. To do this, I conducted 12 semi-structured interviews with 6 farmers and 6 consumers across the Indianapolis region. I used Vermeir and Verbeke’s analytical categories of values, social norms, certainty, perceived availability, and perceived influence. Through my interviews, however, I found my own variables of sense of identity, accessibility, health, and community. This change I found I have attributed to the differences in white and African American respondents’ answers. While analytical variables were largely the same, the reasons behind each analytical variable were different. Identity is how people see, understand, and think of themselves, which consists of cultural attribution from others, individual behaviors, and self-attribution. However, different demographics of respondents connected sustainable agriculture to their identity within different forms of identity. Accessibility can be thought of as social, physical, and economic and was a much stronger factor for the African American interviewees than the white interviewees. Health can also be divided into a shift in overall diet, which was more prevalent in African American respondents, compared to a concern for authenticity, a larger concern for white respondents. Community can be broken down into three categories, the community at a farmer’s market, the community of farmers within sustainable ag, and the local neighborhood community, which was more prevalent in African American respondents. Each of the four factors further clarifies why people become involved in sustainable agriculture, which offers insights into how we can increase overall involvement in sustainable agriculture in Indianapolis

Quantum tunneling Sb-heterostructure millimeter-wave diodes

We have developed a new zero bias millimeter wave diode based on quantum tunneling in an InAs/AlSb/GaSb nanostructure. It is ideal for square law radiometry and passive millimeter wave imaging. Excellent sensitivity has been demonstrated at present up to 110 GHz, with higher bandwidth predicted for smaller area diodes

New tunnel diode for zero-bias direct detection for millimeter-wave imagers

High-resolution passive millimeter wave imaging cameras require per pixel detector circuitry that is simple, has high sensitivity, low noise, and low power. Detector diodes that do not require bias or local oscillator input, and have high cutoff frequencies are strongly preferred. In addition, they must be manufacturable in large quantities with reasonable uniformity and reproducibility. Such diodes have not been obtainable for W-band and above. We are developing zero-bias square-law detector diodes based on InAs/Alsb/GaAlSb heterostructures which for the first time offer a cost-effective solution for large array formats. The diodes have a high frequency response and are relatively insensitive to growth and process variables. The large zero- bias non-linearity in current floor necessary for detection arises from interband tunneling between the InAs and the GaAlSb layers. Video resistance can be controlled by varying an Alsb tunnel barrier layer thickness. Our analysis shows that capacitance can be further decreased and sensitivity increased by shrinking the diode area, as the diode can have very high current density. DC and RF characterization of these devices and an estimate of their ultimate frequency performance in comparison with commercially available diodes are presented

Quantum tunneling Sb-heterostructure millimeter-wave diodes

We have developed a new zero bias millimeter wave diode based on quantum tunneling in an InAs/AlSb/GaSb nanostructure. It is ideal for square law radiometry and passive millimeter wave imaging. Excellent sensitivity has been demonstrated at present up to 110 GHz, with higher bandwidth predicted for smaller area diodes

High frequency performance of Sb-heterostructure millimeter-wave diodes

We have developed a new zero bias millimeter wave diode based on quantum tunneling in an InAs/AlSb/GaSb nanostructure. It is ideal for square law radiometry and passive millimeter wave imaging. Excellent sensitivity has been demonstrated at present up to 110 GHz, with higher bandwidth predicted for smaller area diodes

New tunnel diode for zero-bias direct detection for millimeter-wave imagers

High-resolution passive millimeter wave imaging cameras require per pixel detector circuitry that is simple, has high sensitivity, low noise, and low power. Detector diodes that do not require bias or local oscillator input, and have high cutoff frequencies are strongly preferred. In addition, they must be manufacturable in large quantities with reasonable uniformity and reproducibility. Such diodes have not been obtainable for W-band and above. We are developing zero-bias square-law detector diodes based on InAs/Alsb/GaAlSb heterostructures which for the first time offer a cost-effective solution for large array formats. The diodes have a high frequency response and are relatively insensitive to growth and process variables. The large zero- bias non-linearity in current floor necessary for detection arises from interband tunneling between the InAs and the GaAlSb layers. Video resistance can be controlled by varying an Alsb tunnel barrier layer thickness. Our analysis shows that capacitance can be further decreased and sensitivity increased by shrinking the diode area, as the diode can have very high current density. DC and RF characterization of these devices and an estimate of their ultimate frequency performance in comparison with commercially available diodes are presented

Weight of steel roof trusses

Thesis (B.S.)--University of Illinois, 1900.Ms.Bound with 8 other B.S. theses in architecture from UIUC, 1900. IU-

Monadnock Building; South Addition

Context view depicting the south end of the Monadnock building by Holabird and Roche in the left portion of the image.; The seventeen-story building stands 197 feet (60 meters) tall. The northern half was designed and built by Burnham & Root in 1889-1891; the southern half was designed and built by Holabird & Roche in 1891-1893. The building was designated a Chicago Landmark on November 14, 1973 and was also listed on the National Register of Historic Places. The southern half of the building was built using the more technologically advanced steel frame construction, which allowed narrower piers and wider windows. The radical difference in construction between the two halves marks the building's place in architectural history at the end of one building tradition and the beginning of another. Source: Wikipedia; http://en.wikipedia.org/wiki/Main_Page (accessed 7/17/2010