15,772 research outputs found

    [Review of] Elizabeth Martinez. De Colores Means All Of Us

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    Elizabeth Martinez, well known San Franciscan activist, author and journalist, in her most recent work endeavors to connect the movements of the 90s with the crucible of the 60s. Her narrative of the course of contemporary activism and insurgence in the United States gives the reader an introspective look into the underbelly of Chicano/Chicana activism in the 60s and the resultant conflicts which ensued from not initially addressing issues of sexism, classism and machismo within the Movimiento. She provocatively talks about the utilization of chingon politics and the suppression of the Chicana feminist voice which has ultimately led to attempts to redefine and reconstitute the Movimiento

    Revisiting Factors Associated with the Success of Ballot Initiatives with a Substantial Rail Transit Component, Research Report 10-13

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    This report presents the replication of an MTI study conducted in 2001 by Peter Haas and Richard Werbel. That research, itself a continuation of an earlier project completed in 2000, included an analysis of transportation tax elections in 11 urban areas across the nation and culminated in the identification of 17 community-level factors with potential impact on the success of ballot measures for sales tax increases to fund transportation packages with substantial rail components. Trends observed in these more recent case studies were generally highly consistent with the following findings from the 2001 study. Thus this analysis reaffirms the importance for community consensus amongst the business, elected and environmental communities, and accompanying depth of financial support. Once again, the difficulty of passing an initiative without well-funded, effective use of multimedia was validated, as was the importance of utilizing experienced campaign consultants. Some factors seemed less important in the current study than in 2001, including the effectiveness of presenting a multimodal package, the perception of benefits of a package being distributed throughout the voting district, the experience gained in recent transit elections, and the credibility of the transit agency. Finally, this compilation includes an exploration of “rebound” elections – those instances in which a failed measure is quickly followed by a successful one – and the factors that seem linked to achieving success in such instances

    Editor\u27s Notes

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    As a nation there is probably no greater dividing point for most Americans than the topic of immigration. For the past eight years the American Congress has sought to establish a comprehensive immigration policy and pass sweeping legislation that seeks to define who is eligible to be an American citizen and resident and who will be ultimately included or excluded in terms of naturalization and citizenship. Recent failed attempts to pass a Dream Act to legitimate scores of immigrant children and young adults who have resided in the United States nearly all their lives, and in many cases have no conception of any other culture or national entity, illustrates both the urgency and complexity of projected legislation. Millions will ultimately be affected in terms of their status and identity

    Relativistic Quark Model Calculation of the l1, l2 Coefficients of the Chiral Lagrangian

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    We briefly report on a relativistic quark model scheme to calculate the O(P^4) pion-pion vertex in the planar approximation and in the chiral limit. The calculation is reduced to the solution of simple integral equations (Bethe-Salpeter like) by an effective use of chiral Ward Identities. Specific model computations are provided.Comment: Proc. V Intnal. Conf. on Quark Confinement and the Hadron Spectrum, Gargnano,Italy 200

    Distributional versions of Littlewood's Tauberian theorem

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    We provide several general versions of Littlewood's Tauberian theorem. These versions are applicable to Laplace transforms of Schwartz distributions. We apply these Tauberian results to deduce a number of Tauberian theorems for power series where Ces\`{a}ro summability follows from Abel summability. We also use our general results to give a new simple proof of the classical Littlewood one-sided Tauberian theorem for power series.Comment: 15 page

    Refractive index evaluation of porous silicon using Bragg reflectors

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    There are two main physical properties needed to fabricate 1D photonic structures and form perfect photonic bandgaps: the quality of the thickness periodicity and the refractive index of their components. Porous silicon (PS) is a nano-structured material widely used to prepare 1D photonic crystals due to the ease of tuning its porosity and its refractive index by changing the fabrication conditions. Since the morphology of PS changes with porosity, the determination of PS's refractive index is no easy task. To find the optical properties of PS we can use different effective medium approximations (EMA). In this work we propose a method to evaluate the performance of the refractive index of PS layers to build photonic Bragg reflectors. Through a quality factor we measure the agreement between theory and experiment and therein propose a simple procedure to determine the usability of the refractive indices. We test the obtained refractive indices in more complicated structures, such as a broadband Vis-NIR mirror, and by means of a Merit function we find a good agreement between theory and experiment. With this study we have proposed quantitative parameters to evaluate the refractive index for PS Bragg reflectors. This procedure could have an impact on the design and fabrication of 1D photonic structures for different applications
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