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Open Access Publications from the University of California

Scholarly Works (954 results)

  • Multimedia
  • Peer Reviewed
CMPM 80K (2020)
Making Friends is a comedic fiction story set at a special boat exhibit around a dock. You are on a field trip to this exhibit and visit the different boats with the goal of making friends.
  • 1 supplemental file
  • Article
  • Peer Reviewed
Proceedings of the Annual Meeting of the Cognitive Science Society, Volume 45 (2023)
To succeed in long-term social bargaining, individuals’ own perspectives must be dynamically and flexibly integrated with their partners to maximize self-interests and adapt to the other’s preferences. While a such form of strategic interaction is critical to the understanding of fairness and cooperation, little is known about its developmental trajectories across the lifespan. Here we examined whether and how people learn to anticipate the other’s benefits and act strategically to meet self-interests by using a repeated version of the ultimatum game between two players in a Singapore cohort ranging in age from 6 to 80 y (n = 194). Results show that: children were slower in learning to adapt their offers to their partner’s behavior to achieve successful social bargaining, compared to young and old adults; and children were less sensitive to other’s preferences and less integrating their own perspectives with those of others than young and old adult groups.
    Cover page: Dynamic integration between self and other of social bargaining across the life spanCreative Commons 'BY' version 4.0 license
    • Article
    • Peer Reviewed
    Volume 1, Issue 2 (Fall 2021) (2021)
      Cover page: Freedom Cannot Be Given: An Analysis of the Significance of Women in the Cultural Revolution
      • Article
      LBL Publications (2001)

      The ideal structural steel combines high strength with high fracture toughness. This dissertation discusses the governing principles of strength and toughness, along with the approaches that can be used to improve these properties and the inherent limits to how strong and tough a steel can be.

        Cover page: The limit of strength and toughness of steel
        • Thesis
        • Peer Reviewed
        UC San Diego Electronic Theses and Dissertations (2014)
        Dilute Nitride GaNP is a promising materials for opto- electronic applications due to its band gap tunability. The efficiency of GaNxP1-x/GaNyP1-y core-shell nanowire solar cell (NWSC) is expected to reach as high as 44% by 1% N and 9% N in the core and shell, respectively. By developing such high efficiency NWSCs on silicon substrate, a further reduction of the cost of solar photovoltaic can be further reduced to 61$/MWh, which is competitive to levelized cost of electricity (LCOE) of fossil fuels. Therefore, a suitable NWSC structure and fabrication process need to be developed to achieve this promising NWSC. This thesis is devoted to the study on the development of fabrication process of GaNxP1-x/GaNyP1-y core-shell Nanowire solar cell. The thesis is divided into two major parts. In the first parts, previously grown GaP/ GaNyP1-y core-shell nanowire samples are used to develop the fabrication process of Gallium Nitride Phosphide nanowire solar cell. The design for nanowire arrays, passivation layer, polymeric filler spacer, transparent col- lecting layer and metal contact are discussed and fabricated. The property of these NWSCs are also characterized to point out the future development of Gal- lium Nitride Phosphide NWSC. In the second part, a nano- hole template made by nanosphere lithography is studied for selective area growth of nanowires to improve the structure of core-shell NWSC. The fabrication process of nano-hole templates and the results are presented. To have a consistent features of nano-hole tem- plate, the Taguchi Method is used to optimize the fabrication process of nano -hole templates
          Cover page: Process Development of Gallium Nitride Phosphide Core- Shell Nanowire Array Solar Cell
            LBL Publications (1992)
              Cover page: Structural Studies of Molecular and Metallic Overlayers Using Angle-Resolved Photoemission Extended Fine Structure
              • Thesis
              • Peer Reviewed
              UCLA Electronic Theses and Dissertations (2020)

              Techniques for targeted delivery of nucleic acids are important for biomedical applications of gene therapy. Here, we leverage platelet to specifically deliver plasmid DNA to the target cells. It is demonstrated in vitro that the platelets transfected with GFP-encoding plasmids can deliver plasmids to HepG2 cells. Furthermore, platelets tend to interact more with HepG2 cells during co-culture compared with HeLa cells. Platelets deliver plasmids to HepG2 cells by actin-dependent endocytosis, whereas both asialoglycoprotein receptors of HepG2 cells and GPIbα of platelets are not involved in this process. This study provides evidences that platelet can be potentially engineered for liver targeted plasmid DNA delivery.

                Cover page: Leveraging platelet for plasmid DNA delivery
                  LBL Publications (1996)
                    Cover page: A Study of Non-Equilibrium Phonons in GaAs/AlAs Quantum Wells
                    • Multimedia
                    • Peer Reviewed
                    CMPM 80K (2020)
                    Like Father, Like Son. by Zhen Hua Lei A dark take on the quote of "Like Father, Like Son." Father's are weird, many fathers will forget your birthday or how old you are, but they will also return home with a crate of your favorite fruit that you mentioned one time six weeks ago. A highly exaggerated example of how each person misinterpret parental love.
                    • 1 supplemental file
                    Creative Commons 'BY-NC' version 4.0 license
                    • Thesis
                    • Peer Reviewed
                    UC San Diego Electronic Theses and Dissertations (2017)

                    Nearest neighbor search is a basic primitive method used for machine learning and information retrieval. We look at exact nearest neighbor search algorithms using tree structures. The most basic tree structure used for fast nearest neighbor search is k-d trees. This thesis will look at k-d tree’s shortcomings and explore various ways to improve its performance. First, we look at PCA trees, which give good performance but is time-expensive. We then study randomized trees, which are very efficient data structures and are flexible in space complexity. Then we introduce a new randomized tree structure, two-vantage-point tree, which outperforms all other tree structures including PCA trees, r-k-d trees, and RP trees. At last, we look at spillover on trees, which can be used to improve the performance of any tree structures. We then compare randomized trees with spillover and show that spill trees only work well with very small spill factor. If more space is allowed, two-vantage-point trees are preferred over spill trees.

                      Cover page: Fast tree based nearest neighbor search
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