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Significance Nervous systems use highly effective layered architectures in the sensorimotor control system to minimize the harmful effects of delay and inaccuracy in biological components. To study what makes effective architectures, we develop a theoretical framework that connects the component speed–accuracy trade-offs (SATs) with system SATs and characterizes the system performance of a layered control system. We show that diversity in layers (e.g., planning and reflex) allows fast and accurate sensorimotor control, even when each layer uses slow or inaccurate components. We term such phenomena “diversity-enabled sweet spots (DESSs).” DESSs explain and link the extreme heterogeneities in axon sizes and numbers and the resulting robust performance in sensorimotor control.
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An Introduction to Protocol Driven Resilience
The structure of engineered infrastructure systems can be represented by a layered architecture. The relationship between physical components of many types of these systems has been well studied and modelled. The engineered design of these systems can account for some of their characteristics such as robustness, flexibility, reliability. We believe that the resilience, or adaptive capacity, of these systems cannot be described merely by studying the engineered components of such systems. This requires studying what we refer to as the protocol layers. The protocol layer is where humans interact with the engineered elements of the system through the collection and processing of information with the aim of producing a control activity on the system. In the first part of this study we look at several formulations of a generic layered transportation system, to discuss the importance of protocols in adaptive capability. In the second part, we take a brief historical look at an important American intermodal inland waterway transportation system, The Tennessee Valley Authority. From this system we extract some basic protocol layers and discuss how the success or failure of this system has resulted from these protocol layers.
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- PAR ID:
- 10148899
- Date Published:
- Journal Name:
- Proceedings of the 29th European Safety and Reliability Conference
- Page Range / eLocation ID:
- 145 to 156
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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- Free Publicly Accessible Full Text
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Accepted Manuscript1.0
- Conference Paper:
- https://doi.org/10.3850/978-981-11-2724-3_1026-cd
