This study revisits a classic yet still intriguing question regarding information technology (IT): what difference does IT "really" make, in terms of people's thinking? In order to explore this question, the effects of IT in authentic research settings were studied through retrospective interviews with 24 academic researchers. Analysis of the…

Discusses asserting and assessing authenticity of digital information sources and why authenticity is an issue now. Describes three types of technical and social strategies (public, secret, and functionally dependent) for asserting authenticity. Cites examples of requirements for authenticity from the various stages in the research process. (AEF)

Presents a seven-step methodology for utilizing integrity constraint knowledge from heterogeneous databases. Describes generating a set of integrity constraints applicable at the integrated level from constraints specified on local databases. Introduces the concept of constraint-based relationships between objects in heterogeneous databases;…

Offers some strategies for enabling science teachers to make better use of data-logging methods. These ideas are grounded in the belief that science teachers are expert lesson planners. Benefits gained for students using data-logging techniques are more likely to be secured through teachers re-interpreting their planning approaches in the new…