George Luger

Learn More
Tuning and controlling particle accelerators is time consuming and expensive. Inherently nonlinear, the control problem is one to which conventional methods cannot satisfactorily be applied. Advanced information technologies such as expert systems and neural networks have been applied separately to the problem, with isolated success. Few, if any, of these(More)
The cross-reactive immune response occurs when an immune system is exposed to one pathogen and challenged with a related but different pathogen; for example, vaccination with one strain of influenza and challenge with a wildtype strain. In this way immunolog-ical memory functions as an associative memory. A discrete object model of the immune system was(More)
Vista Control Systems Inc. is developing a portable system for intelligent accelerator control. Our system is general purpose and has been designed to be reused at multiple accelerator facilities. This portability arises from the hierarchical object-oriented nature of the architecture. The control system employs a multi-level organization in which knowledge(More)
Vista Control Systems, Inc. is developing a portable system for intelligent accelerator control. Our design is general in scope and is thus configurable to a wide range of accelerator facilities and control problems. The control system employs a multi-layer organization in which knowledge-based decision making is used to dynamically configure a lower level(More)
Automatic speech recognition (ASR) is usually defined as the transformation of an acoustic signal to words. Though there are cases where the transformation to words is useful, the definition does not exhaust all contexts in which ASR could be used. Once the constraint that an ASR system outputs words is relaxed, modifications that reduce the search space(More)
We present a portable system for intelligent control of particle accelerators. This system is based on a hierarchical distributed architecture. At the lowest level, a physical access layer provides an object-oriented abstraction of the target system. A series of intermediate layers implement general algorithms for control, optimization, data interpretation,(More)
It is now well understood that language use shapes the acoustic delivery of phonological patterns and, in particular, phonological change. One example of this type of language change-under-use is metathesis, the reversal of the expected linear ordering of sounds. The gradual transformation of chipotle to chipolte, a Spanish import, is an example of(More)
It is now well understood that language use shapes the acoustic delivery of phonological patterns. One common example of this type of language change-under-use is metathesis, which is the reversal of the expected linear ordering of sounds. The gradual transformation of the Spanish word chipotle to chipolte in the United States is an example of metathetic(More)
It is now well understood that language use shapes the acoustic delivery of phonological patterns. One common example of this type of language change-under-use is metathesis, which is the reversal of the expected linear ordering of sounds. The gradual transformation of the Spanish word chipotle to chipolte in the United States is an example of metathetic(More)