Personal and Ubiquitous Computing

, Volume 9, Issue 5, pp 284–290 | Cite as

Distributed processing of reminding tasks within the mobile memory aid system, MEMOS

  • Andrei Voinikonis
  • Klaus Irmscher
  • Hendrik Schulze
Original Article


The mobile extensible memory and orientation system (MEMOS) is a nomadic computing system designed to support patients with disturbances in the prospective memory. The system consists of two parts which are loosely connected via general packet radio service (GPRS): a mobile electronic device [personal memory assistant (PMA)] to remind the patient of important tasks and a base station that coordinates the activities of caregivers and notifies them about the result of the task execution. A major requirement of MEMOS is the autonomous operation of the PMA. This is accomplished by avoiding mobile transactions, the specification of temporal aspects in the task description, introduction of different states for tasks of the PMA and the base station and by splitting task and result management. Special extensible markup language (XML) based languages were developed for data exchange between the base station and the PMA to reflect the temporal aspects of the tasks and for logging the results of task execution.


Cognitive prosthesis Electronic memory aid Mobile computing Assistive technology Health care application 



Atomicity, consistency, isolation, durability


General packet radio service


Handheld device markup language


MEMOS markup language version 2


Mobile extensible memory and orientation system


Personal memory assistant


Extensible markup language


Wireless markup language


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Copyright information

© Springer-Verlag London Limited 2005

Authors and Affiliations

  • Andrei Voinikonis
    • 1
  • Klaus Irmscher
    • 1
  • Hendrik Schulze
    • 1
  1. 1.Department of Computer Science, Chair of Computer Networks and Distributed SystemsUniversity of LeipzigLeipzigGermany

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