Gregory K. Fricke

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To fully describe gene expression dynamics requires the ability to quantitatively capture expression in individual cells over time. Automated systems for acquiring and analyzing real-time images are needed to obtain unbiased data across many samples and conditions. We developed a microfluidics device, the RootArray, in which 64 Arabidopsis thaliana(More)
—Many swarm robotics problems focus on the details of robotic dynamics, while ignoring certain other practical issues such as the boundedness of the exploration space, the probability of unsuccessful communication or sensing between agents, knowledge of a common coordinate system, or the initial distribution of robots. A two-phase control is devised which,(More)
— Representation of a swarm of independent robotic agents under graph-theoretic constructs allows for more formal analysis of convergence properties. We consider the local and global convergence behavior of an N-member swarm of agents in a modified consensus problem wherein the connectivity of agents is governed by probabilistic functions. The addition of a(More)
Swarm robotics offers the promise of enhanced performance and robustness relative to that of individual robots, with decreased cost or time-to-completion for certain tasks. Having many degrees of freedom, the swarm related control and estimation problems are quite challenging, specifically when the solutions involve a large amount of communication among the(More)
Collective robotics offers the promise of enhanced performance and robustness relative to that of individual robots, with decreased cost or time-to-completion for certain tasks. Having many degrees of freedom, the multi-robot control and estimation problems are challenging, specifically when the solutions require a great amount of communication among the(More)
—In recent years, a great deal of interest has been focused on the control of mobile multi-robot systems. The primary reason for this interest in mobile multi-robot systems within the robotics research community is that such systems hold several advantages over single-robot systems. For example, these systems have the capability to quickly explore a large(More)
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