1,260 research outputs found

    Subjective Communication: A New Training Method

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    This project centralizes around the stigma of communicating in the healthcare system, and using policies and procedures as the foundation, when it should be the employees who hold them up. Having worked in healthcare for nearly twelve years, an issue I have always wanted to address is the way we communicate to staff. This translates into training them in a new way as well. While it is important to have rules and protocols are clear as possible, we as leaders must understand that people come from different culture, backgrounds, experiences, generations, etc. So, we need to keep that in mind when training them. While we need to make sure all the basics are taught, it is our duty to find out the strengths of each team member and focus on that when training. A video recording of this presentation is available here

    Design Of An Adaptive Autopilot For An Expendable Launch Vehicle

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    This study investigates the use of a Model Reference Adaptive Control (MRAC) direct approach to solve the attitude control problem of an Expendable Launch Vehicle (ELV) during its boost phase of flight. The adaptive autopilot design is based on Lyapunov Stability Theory and provides a useful means for controlling the ELV in the presence of environmental and dynamical uncertainties. Several different basis functions are employed to approximate the nonlinear parametric uncertainties in the system dynamics. The control system is designed so that the desire dresponse to a reference model would be tracked by the closed-loop system. The reference model is obtained via the feedback linearization technique applied to the nonlinear ELV dynamics. The adaptive control method is then applied to a representative ELV longitudinal motion, specifically the 6th flight of Atlas-Centaur launch vehicle (AC-6) in 1965. The simulation results presented are compared to that of the actual AC-6 post-flight trajectory reconstruction. Recommendations are made for modification and future applications of the method for several other ELV dynamics issues, such as control saturation, engine inertia, flexible body dynamics, and sloshing of liquid fuels

    On a graph parameter related to vertex labelings and its application to minimum rank problems in graph theory

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    This thesis regards the minimum rank and minimum positive semidefinite rank of a simple graph. A graph parameter, called the minimum labeling degree (mld), is defined in terms of the concept of a vertex labeling of a graph, and its value is calculated for a few graph classes. It is proved here that there is a conception of mld that is independent of the notion of vertex labeling. Then, for a few other graph parameters β, including the zero-forcing number, a general inequality between mld and β is shown to hold. Further, it is demonstrated here that a certain upper bound for minimum rank in terms of minimum labeling degree holds for several classes of graphs for which minimum rank is known. Later, graphs whose complements both are K_{3,2}-free and have minimum labeling degree 2 are proved to have minimum positive semidefinite rank at most 4. Finally, two more labeling-independent conceptions of mld are given
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