| 1 |
Collaboration implies sharing of electronic objects and is needed in asynchronous and synchronous modes
|
| 2 |
Asynchronous mode is
-
shared web pages and documents
-
electronic mail
|
| 3 |
Notification and linkage service
-
one associates with each group activity a "magic ID" (barcode)
-
every digital object associated with this activity registers itself when it comes on line with some registry (registry can be distributed). A given object may have multiple barcodes attached to it
-
Either users or Portals (PSE's) register interest in certain barcodes
-
The (Gateway) event service notifies registered observers when a digital object of interest becomes available
|
