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Open Access Publications from the University of California

Scholarly Works (630 results)

  • Article
Contemporary Music Score Collection (2020)
This music score was submitted for the Kaleidoscope 2020 Call for Scores, an open access collaboration with the UCLA Music Library.
    Cover page: Oltre
    • Article
    Contemporary Music Score Collection (2020)
    This music score was submitted for the Kaleidoscope 2020 Call for Scores, an open access collaboration with the UCLA Music Library.
      Cover page: Vestigium
      • Article
      • Peer Reviewed
      nineteen sixty nine: an ethnic studies journal, Volume 2, Issue 1 (2013)
        Cover page: Reading Between the Lines: Searching for Epistemologies of Healing
        • Article
        Contemporary Music Score Collection (2020)
        This music score was submitted for the Kaleidoscope 2020 Call for Scores, an open access collaboration with the UCLA Music Library.
          Cover page: 28, Barbary Lane
          • Article
          • Peer Reviewed
          Biogeographia – The Journal of Integrative Biogeography, Volume 17 (1994)
            Cover page: Lineamenti storici e ricerca faunistica nella provincia di Pesaro e Urbino e nelle Marche
            • Thesis
            • Peer Reviewed
            UC Berkeley Electronic Theses and Dissertations (2022)

            Chapter 1Meat and agriculture is a major source of greenhouse gas releases, and beef is particularly emissions heavy. Plant-based meat (PBM) is billed as a new food that could overturn the beef market and eventually transition many meat eaters to a far more environmentally friendly option. Currently, we have very little information about how much meat is being substituted by PBM. This paper uses proprietary data from a nationwide grocery chain to create a very large sample of households who have bought PBM at least once. With this dataset, I am able to draw fine conclusions about what attributes are related to purchasing and repurchasing PBM. I find that buying and more importantly, rebuying PBM is associated with having previously bought less meat and more meat substitutes. In addition, the people entering the PBM market are no more likely to have bought meat than those who first started buying it, suggesting PBM is struggling to expand its reach to those who could most easily switch away from real meat. In addition, because of how promotional pricing is determined at this nationwide chain, I am able to run event study regressions to test the theory that PBM has is a robust substitute for beef in grocery stores. In these regressions, I find little evidence for switching between meat and PBM.

            Chapter 2(Co-authored with Scott Kaplan) This project leverages a unique setting to study the effects of air pollution on a market good people consume for recreational purposes: tickets to National Football League (NFL) games posted on a popular, online secondary marketplace. Our initial findings suggest that an increase in the AQI does not lead to a statistically significant change in listed ticket prices (in fact, we find a slightly positive estimate that is likely the effect of unaccounted for noise). We also determine that there was no statistically significant impact on the number of tickets listed on the marketplace for these games.

            Chapter 3 The so-called energy efficiency gap that describes how households apparently undervalue investments in energy efficient appliances and capital improvements has long vexed policy makers. In 2007, the US Congress attempted to help close this gap by establishing a 30\% efficiency mandate on all existing incandescent light bulbs. The aim of the law was to eliminate cheap, inefficient bulbs in favor of more expensive, highly efficient compact florescent lamps (CFLs) or yet to be produced more efficient halogen incandescent bulbs, but the ultimate effect of the mandate was unclear at the time it was passed. Using heterogeneity in the roll-out of the mandate between California and the rest of the country, I use a panel of light bulb sales data from a nationwide discount store retailer to examine the effects on the market the mandate had. I find that the mandate increased the price of incandescents (along with their efficiency) but had little effect on the demand for CFLs. When certain incandescents were made unavailable I find strong evidence that customers switched to different types of incandescents or, in some instances, reduced overall light bulb purchases. The mandates clearly incrementally increased the efficiency of light bulbs purchased, but did not switch the nation en-mass to high efficiency CFLs.

              Cover page: Demand for Three Environmentally Friendly Goods: Plant Based Meat, Clean Air, and Efficient Light Bulbs
              • Article
              • Peer Reviewed
              UCLA Previously Published Works (2014)
              Craving of unhealthy food is a common target of self-regulation, but the neural systems underlying this process are understudied. In this study, participants used cognitive reappraisal to regulate their desire to consume idiosyncratically craved or not craved energy-dense foods, and neural activity during regulation was compared with each other and with the activity during passive viewing of energy-dense foods. Regulation of both food types elicited activation in classic top-down self-regulation regions including the dorsolateral prefrontal, inferior frontal, and dorsal anterior cingulate cortices. This main effect of regulation was qualified by an interaction, such that activation in these regions was significantly greater during reappraisal of craved (versus not craved) foods and several regions, including the dorsolateral prefrontal, inferior frontal, medial frontal, and dorsal anterior cingulate cortices, were uniquely active during regulation of personally craved foods. Body mass index significantly negatively correlated with regulation-related activation in the right dorsolateral PFC, thalamus, and bilateral dorsal ACC and with activity in nucleus accumbens during passive viewing of craved (vs. neutral, low-energy density) foods. These results suggest that several of the brain regions involved in the self-regulation of food craving are similar to other kinds of affective self-regulation and that others are sensitive to the self-relevance of the regulation target.
                Cover page: Neural systems underlying the reappraisal of personally craved foods.
                • Article
                • Peer Reviewed
                UCLA Previously Published Works (2015)

                Objective

                Research on eating relies on various indices (e.g., stable, momentary, neural) to accurately reflect food-related reactivity (e.g., disinhibition) and regulation (e.g., restraint) outside the laboratory. The degree to which they differentially predict real-world consumption remains unclear. Further, the predictive validity of these indices might vary depending on whether an individual is actively restricting intake.

                Methods

                We assessed food craving reactivity and regulation in 46 healthy participants (30 women, 18-30 years) using standard measurements in three modalities: a) self-reported (stable) traits using surveys popular in the eating literature, and b) momentary craving ratings and c) neural activation using aggregated functional magnetic resonance imaging data gathered during a food reactivity-and-regulation task. We then used these data to predict variance in real-world consumption of craved energy-dense "target" foods across 2 weeks among normal-weight participants randomly assigned to restrict or monitor target food intake.

                Results

                The predictive validity of four indices varied significantly by restriction. When participants were not restricting intake, momentary (B = 0.21, standard error [SE] = 0.05) and neural (B = 0.08, SE = 0.04) reactivity positively predicted consumption, and stable (B = -0.22, SE = 0.05) and momentary (B = -0.24, SE = 0.05) regulation negatively predicted consumption. When restricting, stable (B = 0.36, SE = 0.12) and neural (B = 0.51, SE = 0.12) regulation positively predicted consumption.

                Conclusions

                Commonly-used indices of regulation and reactivity differentially relate to an ecologically-valid eating measurement, depending on the presence of restriction goals, and thus have strong implications for predicting real-world behaviors.
                  Cover page: Prediction of Daily Food Intake as a Function of Measurement Modality and Restriction Status
                  • Article
                  • Peer Reviewed
                  UC Berkeley Previously Published Works (2021)
                  The climate resilience of river deltas is threatened by rising sea levels, accelerated land subsidence, and reduced sediment supply from contributing river basins. Yet, these uncertain and rapidly changing threats are rarely considered in conjunction. Here we provide an integrated assessment, on basin and delta scales, to identify key planning levers for increasing the climate resilience of the Mekong Delta. We find, first, that 23 to 90% of this unusually productive delta might fall below sea level by 2100, with the large uncertainty driven mainly by future management of groundwater pumping and associated land subsidence. Second, maintaining sediment supply from the basin is crucial under all scenarios for maintaining delta land and enhancing the climate resilience of the system. We then use a bottom-up approach to identify basin development scenarios that are compatible with maintaining sediment supply at current levels. This analysis highlights, third, that strategic placement of hydropower dams will be more important for maintaining sediment supply than either projected increases in sediment yields or improved sediment management at individual dams. Our results demonstrate 1) the need for integrated planning across basin and delta scales, 2) the role of river sediment management as a nature-based solution to increase delta resilience, and 3) global benefits from strategic basin management to maintain resilient deltas, especially under uncertain and changing conditions.
                    Cover page: Strategic basin and delta planning increases the resilience of the Mekong Delta under future uncertainty
                    • Article
                    • Peer Reviewed
                    UC San Diego Previously Published Works (2019)
                    The increasing accuracy and spatiotemporal resolution of space geodetic techniques have positively impacted the study of shallow crustal deformation in response to the redistribution of water masses. Measurable deformations have been documented in areas where snow and water variability is large and persists over sufficiently long periods. Here we analyze GPS time series and hydrological data from the Central-Southern Apennines, a tectonically-active region hosting large karst aquifers. We document the occurrence of regional-scale horizontal and vertical transient deformation that is clearly correlated to seasonal and multiyear hydrological variability. These transient signals, which are most strongly observed at GPS sites surrounding the main karst aquifers, modulate long term tectonic deformation. Our results suggest that the karst aquifers in this region experience alternating periods of expansion and contraction in response to increasing/decreasing precipitation and, consequently, higher/lower hydraulic head in the aquifers. Thanks to the availability of a dense continuous GPS network and complementary hydrological datasets, we are able to verify the processes causing the observed deformation. We model the shallow crust in the region as a continuous anelastic solid and use Green's functions for finite strain cuboid sources to estimate the strain rate distribution associated with the GPS observations. We use the Mw 6.1 L'Aquila earthquake, which struck the Central Apennines in 2009 and whose effects are evident in geodetic data, to document the potential effects of moderate earthquakes on karst aquifers and to demonstrate the importance of correctly discerning tectonic from nontectonic signals in geodetic time series. Enhanced understanding of the karst aquifers behavior is of primary interest for improved management of this vital water resource and for a better understanding of the possible interactions between groundwater content and pore pressure variations in the crust and seismicity.
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