Partial document encryption is an encryption method wherein different parts of a document are separately encrypted. This is often done for efficiency of retrieval to lower the demands on the computer system in general.
Asynchronous learning is a student-centered teaching technique in which online learning resources are used to enable information sharing between people in a network. In asynchronous learning, information sharing is not limited by place or time.
Asynchronous learning is facilitated by media, such as email, online discussion boards, email lists, blogs and wikis.
Asynchronous learning facilitates work relations between teachers and learners, even if the participants are not online at the same time, bringing a high degree of flexibility to e-learning. The asynchronous nature of participation is key to online course options. This allows participants to combine education with family, work and other responsibilities.
Participants can easily log in to an e-learning platform from any virtual location at their convenience and then download/share documents and send emails to their peers and/or teachers. Students also have the ability to spend time polishing their assignments and contributions.
Advantages of asynchronous learning are as follows:
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