Eric Iverson

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An unprecedented combination of simula-tive and metaphor based reasoning about beliefs is achieved in an AI system, ATT-Meta. Much mundane discourse about beliefs productively uses conceptual metaphors such as MIND AS CONTAINER and IDEAS AS INTERNAL UTTERANCES, and ATT-Meta's metaphor-based reasoning accordingly leads to crucial discourse comprehension(More)
An unprecedented combination of simulative and metaphor-based reasoning about beliefs is achieved in an AI system, ATT-Meta. Much mundane discourse about beliefs uses conceptual metaphors (e.g., MIND AS CONTAINER) productively, and ATT-Meta's metaphor-based reasoning accordingly leads to crucial discourse comprehension decisions. ATT-Meta's non-metaphorical(More)
An automatic laser power control scheme for the transistor laser has been developed and demonstrated using the transistor laser collector current output. The collector current enables an all-electrical feedback solution for laser power control, obviating the need for a hybrid integrated monitor photodiode. This control scheme enables the simple monolithic(More)
A type-II GaAsSb Double Heterojunction Bipolar Transistor (DHBT) with an AlInP emitter, doping-graded GaAsSb base, and InP collector has been grown by molecular beam epitaxy. The 0.38 &#x03BC;m emitter devices have been fabricated by a triple-mesa wet etch process and demonstrated f<sub>T</sub>/f<sub>MAX</sub>=470/540 GHz at J<sub>C</sub>=5.1(More)
When computer programs disambiguate words in a sentence, they often encounter non-literal or novel usages not included in their lexicon. In a recent study, Georgia Green (personal communication) estimated that 17% to 20% of the content word senses encountered in various types of normal English text are not fisted in the dictionary. While these novel word(More)
A type-II AlInP/AlGaAsSb/InP double heterojunction bipolar transistor (DHBT) with composition-graded Al content in the base is designed and grown by molecular beam epitaxy. Compared with composition-graded GaAsSb and InGaAsSb bases in DHBT, the graded AlGaAsSb base can generate a larger built-in electric field, thus reducing base transit time and improving(More)
An integrated I/Q modulator is presented, implementing a static frequency divider for local oscillator (LO) quadrature phase splitting, Gilbert cell switching mixers for direct upconversion, and fabricated in a high speed Indium-Phosphide HBT process. LO quadrature is fine-tuned by a control voltage with 0.18 degrees/mV for 2.14 GHz operation.(More)
We de ne within-vehicle and within-tenor reasoning to be reasoning that is done on-they within the vehicle domain or tenor domain, respectively, of a conceptual metaphor, during the comprehension of utterances that manifest the metaphor. The main claim of this paper is that, at least in Arti cial Intelligence systems for understanding metaphorical(More)