Slot-coupled beam-signal-pickup development at Argonne National Laboratory

The overall performance of slot couplers, at least for frequenciees below 2 GHz, can probably not match that of stripline based pickups. A measured, typical coupling at 2 GHz correesponds to about 6 to 7 ohms/slot-pair and produces about 8/sup 0/ phase shift/slot on the TEM line. Suppose a 12 to 14 slot array were constructed with these parameters. It would have a total 90/sup 0/ phase shift at about 1.7 GHz, and the coupling would be about 80 ohms at 2.0 GHz. Such an array would be 30 cm long. In a 10 m long straight section, one could place perhaps 25 such modules. After power adding, the net coupling would be about 80 x ..sqrt..25 = 400 ohms. This is 75% of the value which can be obtained by stripline structures (e.g. the FNAL Tevatron-I design). On the other hand, stripline structures may be difficult to construct for, let's say, a 4 to 8 GHz band. Slot coupled devices may then prove to be the more attractive choice. Slot couplers for these higher frequencies will be the subject of our R and D program at this time in the future

(Dis)Enchanted: (Re)constructing Love and Creating Community in the

This thesis examines a queer fan community for the television show Once Upon a Time (OUAT) that utilizes the social networking site Tumblr as their primary base of fan activity. The Swan Queen fan community is comprised of individuals that collectively support and celebrate a non-canon romantic relationship between two of the female lead characters of the show rather than the canonic, heterocentric relationships that occur between the two women and their respective male love interests. I answer two research questions in this study: First, how are members of the Swan Queen fan community developing counter narratives of love by engaging in meaning-making processes and interpretations of OUAT? And secondly, how do they talk about the purpose and importance of their narratives for themselves or the Swan Queen fan community? In order to answer my research questions, I consider how the Swan Queen fandom developed and how they convey their meaning-making strategies online. To do this, I have analyzed the Tumblr blog of one Swan Queen fan and have used their blog as a nexus between other Swan Queen fans that use the website for their fan activities. Swan Queen fans argue that the show runners of OUAT use subtextual codes within canonical storylines in an effort to queerbait the show’s queer audience members. Moreover, the show runners refute the notion that they are queerbating queer fans at all by arguing that the fans’ perceptions are baseless and that any perceived queering of the characters Emma Swan and Regina Mills is purely “unintentional.” This response has only served to alienate the show’s queer fan base further as it led to increased complaints that the show runners were gaslighting the entire queer fandom. Additionally, Swan Queen fans maintain that the show’s introduction of canonical storylines featuring romantic relationships between Regina and Robin Hood and Emma and Captain Hook are heterosexist and dangerous. The storylines between Emma and Captain Hook, queer fans argue, often promote rape culture, thus perpetuating violence against both queer and non-queer audiences through storylines grounded in fairytale concepts of “True Love” and “Happily Ever After”. As such, Swan Queen fans push back against and reject this violence through their own interpretations and counter narratives of “True Love”. In accordance with previous research, I have found that historically marginalized groups such as the queer community continue to experience widespread and often aggressive attacks by queerphobic individuals and hate groups that are intent on preserving traditionally heterocentric institutions in our society, including (but not limited to) mainstream media broadcasting. Furthermore, fandom has become institutionalized in the same manner and typically operates within hegemonic, heterocentric standards. Conversely, queer fandoms such as the Swan Queen fandom operate outside of these standards, and fans respond to antagonistic efforts to silence them or cast them in an inaccurate manner by creating close-knit social communities to combat these actions and provide a space wherein individuals are able to counter dominant narratives that serve to further marginalize them. This study elucidates how this effort may occur and questions the effect this membership has on those who participate within a queer fandom. It is imperative that such research takes place, as there are very few accounts of how queer fans navigate the complex intersection between fandom and queerness

Policy Implications of Permanently Flooded Islands in the Sacramento–San Joaquin Delta

The Sacramento-San Joaquin Delta is in a state of inevitable transition. Physical and financial pressures are likely to transform parts of the Delta into open water within the next 100 years. Because flooded islands have different habitat, water quality, and hydrodynamic implications depending on location, depth, orientation, and other physical factors, the state may decide to intentionally flood one or more Delta islands in an effort to better manage the Delta’s ecosystem and valuable water supplies. This paper outlines three sets of near term actions the state would have to take to begin transitioning towards intentional island flooding, and discusses legal and political challenges to those actions. Several key findings include the following: (1) amendments to California’s water code and revisions to the Delta Land Use and Resource Management Plan may help the state ensure the legal authority to differentiate levee policies within the Delta; (2) permits for a first, experimental flooded island will likely require the State Water Resources Control Board to revise the Delta Water Quality Control Plan to allow for more short-term flexibility and deal with conflicting ecosystem and water supply uses; and (3) the state may want to prepare mitigation plans for private landowners on neighboring islands whose levees could face new threats of erosion and/or seepage from a nearby flooded island in order to avoid inverse condemnation lawsuits. If the state decides to shift its levee policies in the Delta, serious consideration will need to be given these and additional common, regulatory, statutory, and constitutional laws

Microwave Ridged Waveguide Beam Pickups

Sensitive broad-band beam pickups are a prerequisite for improved stochastic beam cooling. The 2-4 GHz and the 4-8 GHz bands have been of particular interest for stochastic cooling applications. This report summarizes the striking results of an investigation of ridged waveguide pickups at Argonne. An upper-to-lower frequency ratio of 2.4:1 is readily obtained with a ridged waveguide as compared to 1.5:1 with a standard waveguide. Wire measurements and tests at the Argonne beam test facility indicate an approximate 20% increase in gain per unit over a stripline with comparable longitudinal spacing. Another advantage of waveguide pickups is construction simplicity. The output is easily coupled to a transmission line. Descriptions of the design, construction, and results are included in this report

Policy Implications of Permanently Flooded Islands in the Sacramento–San Joaquin Delta

The Sacramento-San Joaquin Delta is in a state of inevitable transition. Physical and financial pressures are likely to transform parts of the Delta into open water within the next 100 years. Because flooded islands have different habitat, water quality, and hydrodynamic implications depending on location, depth, orientation, and other physical factors, the state may decide to intentionally flood one or more Delta islands in an effort to better manage the Delta’s ecosystem and valuable water supplies. This paper outlines three sets of near term actions the state would have to take to begin transitioning towards intentional island flooding, and discusses legal and political challenges to those actions. Several key findings include the following: (1) amendments to California’s water code and revisions to the Delta Land Use and Resource Management Plan may help the state ensure the legal authority to differentiate levee policies within the Delta; (2) permits for a first, experimental flooded island will likely require the State Water Resources Control Board to revise the Delta Water Quality Control Plan to allow for more short-term flexibility and deal with conflicting ecosystem and water supply uses; and (3) the state may want to prepare mitigation plans for private landowners on neighboring islands whose levees could face new threats of erosion and/or seepage from a nearby flooded island in order to avoid inverse condemnation lawsuits. If the state decides to shift its levee policies in the Delta, serious consideration will need to be given these and additional common, regulatory, statutory, and constitutional laws

Factors Related to the Process of Qualifying Students as Section 504-Only in an Urban Public School District in Tennessee

The purpose of this ex post facto study was to provide a quantitative examination of the differences between grade-level span on the percentage of students with a physical or mental impairment, which substantially limits one or more major life activities (504-only) and whether demographic factors (gender, ethnicity, grade level span, Limited English Proficiency, students receiving special education IDEA) influenced that percentage. It also sought to examine differences between the percent of 504-only students based on the Title I (socioeconomics) status of their school and whether demographic factors influenced that percentage. Archival Civil Rights Data Collection and Title I data were collected and assessed for the 82,714 students enrolled in 152 schools in an urban school district in Tennessee. This study explored these research questions: (a) Is there a difference between grade level-span (elementary schools, middle schools, high schools, and others schools) on the percentage of 504-only students and did demographic factors influence that percentage? (b) Is there a difference between the percentage of 504-only students based on the Title I status of their school and did demographic factors influence that percentage? Analysis of the two research questions was accomplished by using both one-way analysis of variance (ANOVA) and analysis of covariance (ANCOVA). A significance level of p \u3c .05 was set beforehand. In exploring these questions, significant difference between the grade level span, F(3, 148) = 28.65, p \u3c .001 were found. The demographic factors showed significant difference for grade level span, F(3, 143) =17.99, p \u3c .001. There was a significant difference between Title I schools (high poverty) and their non-Title I counterparts (low poverty), F(1, 150) = 4.41, p \u3c .05. Title I status, by demographic factors showed significant difference: Black, F(1, 145) = 11.88, p \u3c .01; White, F(1, 145) = 12.20, p \u3c .01; LEP, F(1, 145) = 21.92, p \u3c .001; and IDEA, F(1, 145) = 8.46, p \u3c .01. As a result of the findings of this research, recommendations for practice support the need for professional development to be provided for administrators, Section 504 Coordinators, and teachers

Policy Implications of Permanently Flooded Islands in the Sacramento–San Joaquin Delta

Robyn J. Suddethdoi: http://dx.doi.org/10.15447/sfews.2011v9iss2art5The Sacramento-San Joaquin Delta is in a state of inevitable transition. Physical and financial pressures are likely to transform parts of the Delta into open water within the next 100 years. Because flooded islands have different habitat, water quality, and hydrodynamic implications depending on location, depth, orientation, and other physical factors, the state may decide to intentionally flood one or more Delta islands in an effort to better manage the Delta’s ecosystem and valuable water supplies. This paper outlines three sets of near term actions the state would have to take to begin transitioning towards intentional island flooding, and discusses legal and political challenges to those actions. Several key findings include the following: (1) amendments to California’s water code and revisions to the Delta Land Use and Resource Management Plan may help the state ensure the legal authority to differentiate levee policies within the Delta; (2) permits for a first, experimental flooded island will likely require the State Water Resources Control Board to revise the Delta Water Quality Control Plan to allow for more short-term flexibility and deal with conflicting ecosystem and water supply uses; and (3) the state may want to prepare mitigation plans for private landowners on neighboring islands whose levees could face new threats of erosion and/or seepage from a nearby flooded island in order to avoid inverse condemnation lawsuits. If the state decides to shift its levee policies in the Delta, serious consideration will need to be given these and additional common, regulatory, statutory, and constitutional laws.</p