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13
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Introduction
Skills and Expertise
Publications
Publications (13)
This paper explores the intersection of two-way wireless data
messaging and telephony, enabling nomadic end users to screen, select,
and receive calls and exchange messages with callers independent of
location. This is accomplished by combining features of the public local
exchange telephone network, a Bellcore experimental software prototype
appli...
Proposed personal communications services will allow their users to be accessible anywhere and any time. Informal investigations with potential users revealed that these services would not be widely accepted without effective call prioritization and screening, akin to that provided by a human receptionist, to limit which calls get through and which...
The phenomenal increase in the use of pagers, car phones, cordless telephones, and other personal communications devices testifies to the fact that communications is an essential element of life in the 1990's. Even with these devices many people are still effectively out of reach, however, because at any given time callers do not know which of the...
Storage time has dramatic effects on the retrieval of visual information specified by location. In this study we use two new experimental procedures to assess the roles in the retrieval process of uncertainty about location, target, and response, and of changes in such uncertainty with storage time. In one procedure we provided advance information...
What might it mean for execution of an action sequence to be controlled hierarchically? We argue that if production of a sequence consists of the execution of nested constituent subsequences, then it should be characterized by two invariance properties-properties that limit the effects of one part of the sequence on another. Because one such consti...
A Public Library Association (PLA) survey compiled information on public libraries in bibliographic networks. Aspects identified and measured were perceptions of participation, reasons for non-participation, reactions to services, and suggestions for increasing participation. Recommendations are made for actions by PLA and the networks to ensure se...
