Download ACM transactions on computer-human interaction (March) by Kwok-Kee Wei, Krishnamurthy S. Raman on the task-medium fit PDF

By Kwok-Kee Wei, Krishnamurthy S. Raman on the task-medium fit proposition, Loren Terveen on topically related Web resources, and others Stephen Morrison on non-WIMP user interfaces

Significant essays through prime foreign machine scientists.

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The user switches to another application) ACM Transactions on Computer-Human Interaction, Vol. 12, No. 1, March 2005. 46 • K. Hinckley et al. Conversely, the Context Server sends a GroundChange message to an application telling it to resume using a sensor at its previously requested ground level under the following conditions: 1. g. when the user switches to that application). 2. The application requested BackgroundService and an application with ForegroundService on the same sensor becomes inactive.

1, March 2005. Foreground and Background Interaction with Sensor-Enhanced Mobile Devices • 37 the techniques. Henceforth in this article, names in the Courier font represent context attributes, while Italicized items represent particular named values of a context attribute. 2 Automatic Power Control Finding the power button on mobile devices can be physically awkward and demanding of attention. We observed that people typically hold their PDA in a posture appropriate for use, and then press the power button; pressing the power button is an explicit step secondary to the natural act of picking up the device.

What becomes possible when a system can not only sense touch, tilt, and proximity, but can also detect its location, recognize real-world objects [Want et al. 1999], identify the user and other persons nearby, and see, feel, and hear through digital perceptual mechanisms? The emergence and integration of more comprehensive sensor systems may benefit not only individual users, but also networks of users and society as a whole. ACKNOWLEDGMENTS We are grateful to Eugene Shih for his efforts on our sensor hardware and firmware, as well as Andy Wilson and Steve Bathiche for discussions of sensors.

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