Phyllis R. Nelson

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The response of a polysilicon parallel-plate electrostatic actuator to AC signals at diierent bias voltages has been measured with a laser interferometer. Using microhinges, large plates (with areas from 100m 2 to 0:1mm 2) with long thin support beams (such as 60031:5m 3) are rotated oo the surface of the substrate to form a parallel-plate capacitor.(More)
Low power wireless sensor networks provide a new monitoring and control capability for civil and military applications in transportation, manufacturing, biomedical technology, environmental management, and safety and security systems. Low power integrated CMOS systems are being developed for microsensors, signal processors, microcontrollers, communication(More)
The mutagenicity of particulate matter concentrated from environmental tobacco smoke (ETS) from a prototype cigarette that primarily heats tobacco was compared to that of four popular commercially available cigarettes that burn tobacco. ETS was generated by six individuals simultaneously smoking 1 cigarette each in a 20-min time period in a 45 m3(More)
This paper is about the requirements and architectural considerations that provide a SORT system with processes for observing, modeling, simulating, predicting, deciding, and acting in an external environment. For our purposes, ``real time'' (RT) means coordinated with an external source of time or with sequences of events over which the system has no(More)
In order for a self-organizing real time (SORT) system to produce real time behavior that is "good enough," it must have the ability to trade off among competing performance metrics, of which time is only one. In this paper we discuss what some of those trade-offs are at both "design time" and during operations, present some examples of how biological(More)
No system in the real world can compute an appropriate response in reaction to every situation it encounters, or even most situations it is likely to encounter. Biological systems address this issue with four strategies: (1) a repertoire of already computed responses tied to a situation recognition process, (2) organized in a response-time hierarchy that(More)
Cyber-physical systems are being deployed in a wide variety of applications, creating a highly-capable infrastructure of networked " smart " systems that utilize coordinated computational and physical resources to perform complicated tasks either autonomously or in cooperation with humans. The design and testing of these systems using current methods, while(More)
Organic computing (OC) recognizes that the behaviors of deployed systems can be much more interesting than those predicted by simulation. By exploiting self-X properties such as self-organization, self-optimization, self-protection, and context-awareness, OC researchers are developing methods for creating robust, trustworthy systems. This paper presents two(More)