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Open Access Publications from the University of California

Scholarly Works (3 results)

  • Article
IURD Working Paper Series (2004)

This paper synthesizes and extends the results of urban land market studies carried out in three Brazilian cities -- Brasília, Curitiba and Recife. The purpose of the studies is to empirically assess the performance of urban land markets in different cities and to gauge the feasibility of applying the Land Market Assessment methodology in Brazil. The project involved the collaboration of several organizations: The World Bank, Instituto de Pesquisa Econômica Aplicada (IPEA), Secretaria de Estado de Desenvolvimento Urbano e Habitação (SEDUH), Instituto de Pesquisa e Planejamento Urbano de Curitiba (IPPUC), and Fundação de Desenvolvimento Municipal (FIDEM). The field research was carried out in 2003.

The paper is organized into seven sections. The first section provides a brief overview of urban land market research. The next section summarizes urbanization and housing markets in Brazil. The third section elaborates on the selection of the three cities and their profiles. The fourth section provides a general description of population, urban land development, and housing for the cities. Next, the paper provides a detailed spatial examination of these demographic, land use, and housing trends. The sixth section examines the effects of location, infrastructure, titling, and other factors on residential land prices. The final section outlines conclusions and policy implications.

    Cover page: Urban Land Markets and Urban Land Development: An Examination of Three Brazilian Cities: Brasília, Curitiba and Recife
    • Article
    Capstone Projects (2024)
    This report offers starting points for fulfilling objectives identified by Our Streets Action Committee (OSAC), a Los Angeles-based coalition of organizations focused on transportation equity and mobility justice.The report is organized around four topics:1. Indicators of Mobility (In)Justice explores data tools for visualizing the infrastructure and safety deficits we know overburden many of Los Angeles’ communities of color and low-income neighborhoods.2. Change in Paradigm: Reparative Models of Engagement lays out the shift needed to move urban planning from an extractive practice to a reparative one that builds regenerative cities, as well as examples of how planners and community organizations are accelerating this transition.3. The Funding Analysis examines how the region funds Los Angeles’ street infrastructure development and maintenance and suggests directions for increasing priority investments.4. Political Strategy for Mobility Organizing offers analysis of Los Angeles City Councilmembers’ voting records on mobility issues, along with analysis of opportunities for strategic organizing toward equitable and just mobility improvements.
      Cover page: Planning for Mobility Justice in Los Angeles: Client Project for Our Streets Action Committee
      • Article
      • Peer Reviewed
      UC San Diego Previously Published Works (2022)
      The interaction of an intense laser with a solid foil target can drive [Formula: see text] TV/m electric fields, accelerating ions to MeV energies. In this study, we experimentally observe that structured targets can dramatically enhance proton acceleration in the target normal sheath acceleration regime. At the Texas Petawatt Laser facility, we compared proton acceleration from a [Formula: see text] flat Ag foil, to a fixed microtube structure 3D printed on the front side of the same foil type. A pulse length (140-450 fs) and intensity ((4-10) [Formula: see text] W/cm[Formula: see text]) study found an optimum laser configuration (140 fs, 4 [Formula: see text] W/cm[Formula: see text]), in which microtube targets increase the proton cutoff energy by 50% and the yield of highly energetic protons ([Formula: see text] MeV) by a factor of 8[Formula: see text]. When the laser intensity reaches [Formula: see text] W/cm[Formula: see text], the prepulse shutters the microtubes with an overcritical plasma, damping their performance. 2D particle-in-cell simulations are performed, with and without the preplasma profile imported, to better understand the coupling of laser energy to the microtube targets. The simulations are in qualitative agreement with the experimental results, and show that the prepulse is necessary to account for when the laser intensity is sufficiently high.
        Cover page: A laser parameter study on enhancing proton generation from microtube foil targets
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