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1. Low viscosity liquid bridges: Stretching of liquid bridges immersed in a higher viscosity liquid

   https://doi.org/10.1016/j.jciso.2023.100079  

   Lopez, Ramon; Vaswani, Jovina; Butler, Dylan T.; McCarthy, Joseph; Velankar, Sachin S. (April 2023, JCIS Open)
2. Stochastic Bridges of Linear Systems

   https://doi.org/10.1109/TAC.2015.2440567  

   Chen, Yongxin; Georgiou, Tryphon (September 2019, IEEE Transactions on Automatic Control)

   We consider particles obeying Langevin dynamics while being at known positions and having known velocities at the two end-points of a given interval. Their motion in phase space can be modeled as an Ornstein–Uhlenbeck process conditioned at the two end-points—a generalization of the Brownian bridge. Using standard ideas from stochastic optimal control we construct a stochastic differential equation (SDE) that generates such a bridge that agrees with the statistics of the conditioned process, as a degenerate diffusion. Higher order linear diffusions are also considered. In general, a time-varying drift is sufficient to modify the prior SDE and meet the end-point conditions. When the drift is obtained by solving a suitable differential Lyapunov equation, the SDE models correctly the statistics of the bridge. These types of models are relevant in controlling and modeling distribution of particles and the interpolation of density functions. 

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3. Building Simple Games With BRIDGES

   https://doi.org/10.1145/3287324.3293758  

   Burlinson, David; Saule, Erik; Subramanian, Kalpathi (March 2019, Proceedings of the 50th ACM Technical Symposium on Computer Science Education)

   Many newcomers to programming and computational thinking have been brought up on interactive, gamified learning environments. Introductory computer science courses at the university level need to dig deeper into these topics, but must do so with similarly engaging technologies and projects. To address this need, we have built a framework for a grid-based game API with event-based blocking and continuous non-blocking interfaces. The framework abstracts away much of the complexity of inputs and rendering and exposes a simple game grid similar to a 2D array indexed by rows and columns. As such, our project helps reinforce basic computing concepts (arrays, loops, OOP, recursion) with a customizable and engaging game interface. We have discussed the valuable influence of visual representations of student's data structures using BRIDGES in previous publications, and believe our game API can provide significance and intrigue for students in introductory courses and beyond. Our Bridges Games App website (http://bridges-games.herokuapp.com/) presents descriptions and instructions. 

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4. Ephemeral Exit Bridges for Tor

   Zhang, Zhao; Vaidya, Tavish; Subramanian, Kartik; Zhou, Wenchao; Sherr, Micah (July 2020, 50th IEEE/IFIP International Conference on Dependable Systems and Networks (DSN 2020))

   This paper examines an existential threat to Tor— the increasing frequency at which websites apply discriminatory behavior to users who arrive via the anonymity network. Our main contribution is the introduction of Tor exit bridges. Exit bridges, constructed as short-lived virtual machines on cloud service providers, serve as alternative egress points for Tor and are designed to bypass server-side censorship. Due to the proliferation of managed cloud-based desktop services (e.g., Amazon Workspaces), there is already a surprisingly large fraction of web requests that originate in the cloud. Trivially disrupting exit bridges by blocking requests from the cloud would thus lead to significant collateral damage. Our experiments demonstrate that exit bridges effectively circumvent server-side blocking of Tor with low overhead. Ad- ditionally, we perform a cost-analysis of exit bridges and show that even a large-scale deployment can be done at low cost. 

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5. Dark Structures in Sunspot Light Bridges

   https://doi.org/10.3847/1538-4357/aada0a  

   Zhang, Jingwen; Tian, Hui; Solanki, Sami K.; Wang, Haimin; Peter, Hardi; Ahn, Kwangsu; Xu, Yan; Zhu, Yingjie; Cao, Wenda; He, Jiansen; et al (September 2018, The Astrophysical Journal)