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Levels of Autonomy (LoA) provide a method for describing authority granted to operators and autonomous system elements. Unfortunately, LoA does not provide the user interface designer a clear method to distinguish interface concepts which impose varying levels of operator workload or result in human or system performance changes. The current research suggests an alternate classification framework...
Increasingly complex contested environments force analysts to combine many different types of intelligence data to form a more cohesive picture of the environment. Information fusion systems include computers that integrate and synthesize information from multiple sources and humans who combine that information with reasoning abilities and knowledge of past events to assess situations and predict...
Current systems incorporating human-agent interaction typically place the human in a supervisory role and the agent as a subordinate. However, a key aspect of teaming is the dynamic shift in roles. Depending on the situation at hand, teaming could lead to a peer relationship where the human and agent are working together on the same task. This research investigates how the timing of agent actions...
Many established statistical principles guide the design, conduct, and interpretation of clinical trials. In older cohorts, clinical trialists face increased challenges in several statistical areas. Outcomes that trials target are often difficult to define. Interventions that are developed and tested for these outcomes may be complex and influence multiple potential mechanisms of action. Outcome data...
Models for evaluating changes in human workload as a function of task allocation between humans and automation are investigated. Specifically, SysML activity diagrams and IMPRINT workload models are developed for a tablet-based game with the ability to incorporate automation. Although a first order model could be created by removing workload associated with tasks that are allocated away from the human...
Adaptive automation has been proposed, where changes in automation are triggered based upon operator state to mitigate automation-induced problems such as complacency. This research sought to understand the effect of a weighted method, as compared to a method in which all tasks are weighed equally, when triggering changes in automation within a multitasking environment. The weighted method considered...
Functional electrical stimulation can be used to restore gait after incomplete spinal cord injury but needs to be coordinated with the user's retained volitional control. This paper outlines the case study of an implanted neuroprosthesis comparing an open-loop, pre-set pattern of stimulation with use of intramuscular electromyogram (EMG) recordings to trigger changes in stimulation. The user could...
Over the past several decades, the military, government and commercial industries have begun to realize the potential benefits that Remotely Piloted Aircraft (RPA) technologies stand to deliver. As a result, the demand for medium to high-altitude RPA operations, especially within the US Air Force, continues to grow. However, the assets and requisite resources to support those operations are far from...
This study describes the preliminary performance of an implanted neuroprosthesis for standing and transfers after spinal cord injury. The system is a 16-channel version of the 8-channel Case Western Reserve University/Veteran Affairs (CWRU/VA) standing/transfer neural prosthesis. It includes bilateral four channel femoral nerve cuff electrodes for stimulation of the vastii to provide knee extension...
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