59 research outputs found
Army Officer Corps Science, Technology, Engineering and Mathematics (STEM) Foundation Gaps Place Countering Weapons of Mass Destruction (CWMD) Operations at Risk – Part 1
This is the first of three articles from the authors describing the risk to Joint Operations incurred by an Army that is vulnerable to the STEM challenges faced in a great power competition involving CWMD operations. In this article, we describe the problem. In articles two and three of the series, we will elaborate on the problem utilizing the Joint Publication 3-0 as our guide and recommend solutions to address this gap
Concurrent Active Learning in Autonomous Airborne Source Search: Dual Control for Exploration and Exploitation
In this paper, a concurrent learning framework is developed for source search
in an unknown environment using autonomous platforms equipped with onboard
sensors. Distinct from the existing solutions that require significant
computational power for Bayesian estimation and path planning, the proposed
solution is computationally affordable for onboard processors. A new concept of
concurrent learning using multiple parallel estimators is proposed to learn the
operational environment and quantify estimation uncertainty. The search agent
is empowered with dual capability of exploiting current estimated parameters to
track the source and probing the environment to reduce the impacts of
uncertainty, namely Concurrent Learning based Dual Control for Exploration and
Exploitation (CL-DCEE). In this setting, the control action not only minimises
the tracking error between future agent's position and estimated source
location, but also the uncertainty of predicted estimation. More importantly,
the rigorous proven properties such as the convergence of CL-DCEE algorithm are
established under mild assumptions on noises, and the impact of noises on the
search performance is examined. Simulation results are provided to validate the
effectiveness of the proposed CL-DCEE algorithm. Compared with the
information-theoretic approach, CL-DCEE not only guarantees convergence, but
produces better search performance and consumes much less computational time
Development of an inversion method for the improved determination of the spatial distribution of radioactive materials using UAVs
Army Officer Corps Science, Technology, Engineering and Mathematics (STEM) Foundation Gaps Place Countering Weapons of Mass Destruction (CWMD) Operations at Risk – Part 2
High capacity lab-on-valve bead injection extraction chromatography for radip determinaiton of plutonium in human urine
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